Top Environmental Issues:

Climate Change:

Get up to speed with our 2-minute crash course on climate change. Scan down the page to learn:

  • What are the greatest threats?
  • Who will be hit the hardest?
  • Who is doing what to help now?
  • What can you do to help?

Introduction/Overview of the Issue

Climate change is something we’re all living with, whether it’s hotter summers, stronger storms, or changing seasons. At its core, climate change refers to long-term shifts in temperature and weather patterns, mostly driven by human activities like burning fossil fuels and cutting down forests. These activities release gases into the atmosphere that trap heat, gradually warming the planet.
The effects are becoming harder to ignore. Coastal areas face more frequent flooding, farmers are dealing with unpredictable growing seasons, and wildlife is struggling to adapt. While these changes may seem overwhelming, understanding climate change helps us make sense of what’s happening around us and what we can do about it. This guide breaks down the causes, impacts, and the actions being taken to address this challenge.

Startling Facts About Climate Change

19 of the 20 Warmest Years on Record Have Occurred Since 2001

The planet’s temperature has risen rapidly, with most of the hottest years recorded in the last two decades.

Source: NASA and NOAA, 2020

Global Crop Yields Could Fall by Up to 30% by 2050

Climate change is expected to reduce yields of major crops like wheat and rice, threatening global food security.

Source: IPCC Special Report on CC & Land, 2019

Global CO2 Levels Are the Highest They’ve Been in 3 Million Years

Atmospheric carbon dioxide is at levels not seen since the Pliocene era, when Earth was much warmer.

Source: NOAA, 2021

Climate Change Could Displace 200 Million People by 2050

Rising seas, droughts, and extreme weather are driving forced migrations, making climate refugees a growing crisis.

Source: UN High Commissioner for Refugees, 2021

Antarctica Is Losing 150 Billion Tons of Ice Per Year

Melting ice sheets in Antarctica are one of the major contributors to global sea level rise.

Source: NASA, 2020

More Than 1 Million Species Are at Risk of Extinction

Climate change is a significant driver of the current biodiversity crisis, endangering countless species worldwide.

Source: IPBES Global Assessment Report, 2019

Scope of the Climate Change Issue

The impact of climate change reaches into every corner of our lives, from where we live to what we eat, affecting both people and the planet in profound ways.

Millions on the Move: Climate Displacement

By 2050, an estimated 200 million people could be forced to leave their homes due to rising seas, extreme weather, and prolonged droughts. Coastal cities like Miami are already spending billions to build defenses, while entire island nations face becoming uninhabitable.

  • Rising Seas: Sea levels have risen 8 inches since 1880, and they’re accelerating. By 2100, coastal flooding could displace millions more, impacting everyone from farmers in Bangladesh to residents in New York City.
  • Extreme Weather: Floods and storms are becoming more frequent, with hurricanes in the U.S. causing an average of $50 billion in damage annually.
  • Drought: Severe droughts in regions like sub-Saharan Africa and the American Southwest are threatening water supplies and leading to widespread food shortages.

Antarctica Is Losing 150 Billion Tons of Ice Per Year

Rising seas are forcing entire towns to relocate. In Louisiana, the residents of Isle de Jean Charles are packing up their lives and moving inland as their island home is swallowed by rising waters and eroding land. Once covering 22,000 acres, the island has shrunk to a mere sliver, making this small community the first official climate refugees in the U.S. This isn’t a distant problem—climate change is uprooting lives right here, right now.

Species on the Brink: Animal Migration and Extinction

More than a million species are at risk as climate change pushes animals into new, unfamiliar territories or eliminates their habitats altogether.

  • Polar Bears: With sea ice melting, polar bears are losing critical hunting grounds, forcing them closer to human settlements and endangering both species.
  • Bird Migrations: Birds are migrating earlier than ever, struggling to adapt to changing food sources and disrupted ecosystems.
  • Coral Reefs: If current trends continue, coral reefs could all but disappear by 2050, erasing entire ecosystems that support marine life and human livelihoods.

Rising Inequality: Environmental Justice in a Warming World

Climate change disproportionately affects the poorest and most vulnerable communities, who are the least responsible for its causes.

  • Communities of Color: In the U.S., communities of color are 79% more likely to live in areas prone to climate hazards like floods and heatwaves.
  • Indigenous Peoples: Indigenous communities around the world, from the Arctic to the Amazon, are among the first to face displacement, losing their lands and traditional ways of life.
  • Global Inequity: While developed nations are the largest emitters, developing nations are facing the harshest consequences—both in terms of economic impact and human suffering.

As the effects of climate change continue to ripple through our world, it’s clear that adaptation and action are no longer optional—they’re a necessity for survival and equity.

Causes of Climate Change

The root cause of climate change lies in the gases we emit, the systems we rely on, and the forests we cut down—each contributing to a warming world.

Greenhouse Gases:
Warming the Planet with Every Daily Choice

Greenhouse gases like carbon dioxide and methane are the main drivers of climate change, trapping heat in the atmosphere and warming the planet. While this is largely due to fossil fuel consumption, it’s our demand for everyday conveniences—energy, food, transportation—that fuels these emissions.

Get The Stats

  • Carbon Emissions: Each year, 36 billion tons of carbon dioxide are pumped into the atmosphere from burning fossil fuels for electricity, heating, and transportation.
  • Methane Emissions: Agriculture accounts for nearly 40% of methane emissions, with livestock and food waste being major contributors.

Fossil Fuels:
Driving Climate Change Through Modern Consumption

Fossil fuels power nearly every aspect of modern life, from electricity to transportation to manufacturing. But this comes at a steep cost—carbon emissions that are accelerating climate change.

  • Transportation: Cars, trucks, and airplanes account for nearly a quarter of global carbon emissions, driven by our demand for travel and goods.
  • Electricity Production: The majority of the world’s electricity still comes from burning fossil fuels, despite the growth of renewable energy.

Deforestation:
Losing Our Best Defense Against Carbon

Forests are crucial for absorbing carbon dioxide, but deforestation is erasing these natural carbon sinks faster than they can recover. This destruction is driven by consumer demand for products like beef, soy, and palm oil.

  • Forest Loss: The Amazon rainforest is losing 10,000 square kilometers each year, releasing stored carbon back into the atmosphere and reducing future absorption capacity.
  • Agriculture and Development: Global deforestation is largely fueled by the need for more land to grow food and build infrastructure, exacerbating climate change.

Political and Economic Systems:
Blocking Progress While Consumer Demand Grows

Slow policy changes, subsidies for fossil fuels, and economic reliance on cheap energy are delaying the shift to renewable energy and sustainable practices.

  • Fossil Fuel Subsidies: Governments worldwide continue to provide $5.9 trillion in fossil fuel subsidies, propping up an industry that drives emissions.
  • Renewable Energy: Although renewable energy sources are growing, they still make up only about 29% of global electricity generation, as fossil fuels remain dominant due to political and economic interests.

Addressing climate change means tackling these deep-rooted drivers, requiring bold shifts in how we power our world and manage our natural resources.

Impact of Climate Change

Environmental Impact:

A Planet in Crisis

Climate change is disrupting ecosystems, driving biodiversity loss, and altering the balance of nature faster than species can adapt.

Where it’s felt:

  • Biodiversity Loss: Over 1 million species are facing extinction due to shrinking habitats and severe weather, with some species already disappearing at 100 times the natural rate.
  • Coral Bleaching: Half of the world’s coral reefs have already been lost, and with ocean temperatures rising, 90% could vanish by 2050, devastating marine ecosystems and the livelihoods of 500 million people.
  • Disrupted Ecosystems: Forests and wetlands that filter our air and water are failing to keep up with rapidly changing weather patterns, leading to cascading effects like loss of pollinators, soil degradation, and disrupted food webs.

Human Health:

The Toll of a Hotter World

Climate change is already endangering our health through rising heat, spreading disease, and jeopardizing food security.

Where it’s felt:

  • Heat-Related Illnesses: Heatwaves have tripled in frequency in the last 30 years, pushing vulnerable populations like the elderly and outdoor workers toward higher rates of heatstroke, dehydration, and even death.
  • Spreading Disease: Mosquito-borne diseases like malaria and dengue fever are appearing in places once considered too cold for them, endangering millions of people who were previously safe.
  • Food Security: Extreme droughts, floods, and unpredictable growing seasons are slashing crop yields globally, contributing to rising food prices that hit low-income households hardest.

Economic Impact:

Counting the Rising Costs

The economic fallout from climate change is escalating rapidly, with severe weather and adaptation costs mounting year after year.

Where it’s felt:

  • Disaster Damages: Climate-related disasters caused $145 billion in damage in the U.S. alone in 2021, with that number expected to rise as hurricanes, wildfires, and floods become more intense.
  • Soaring Insurance Costs: Homeowners in high-risk areas are seeing insurance premiums skyrocket, with some policies becoming completely unaffordable, leaving them vulnerable after disasters.
  • Costs of Adaptation: Governments are spending billions on new infrastructure to combat future climate impacts, from sea walls to renewable energy systems. The global cost of adaptation could reach $300 billion per year by 2030.

Climate Change is Coming
...for Your Morning Joe!

Your daily coffee fix might be in trouble. Climate change is shrinking the areas where coffee can grow, with rising temperatures and erratic weather making up to half of current coffee-growing regions unsuitable by 2050. Central and South American farms are already feeling the squeeze, and if the trend continues, your favorite brew could become harder to find and a whole lot pricier. The next time you reach for that cup of coffee, remember—it’s not just the beans that are heating up.

WHO is Doing What to Help

Government Initiatives

The economic fallout from climate change is escalating rapidly, with severe weather and adaptation costs mounting year after year.

  • The Paris Agreement: Nearly 200 nations have committed to limiting global warming to 1.5°C, with pledges to reduce emissions and transition to renewable energy.
  • National Policies: Countries like Germany, Sweden, and the UK are leading the charge with ambitious targets to become carbon-neutral by 2040, while the U.S. has rejoined the Paris Agreement, setting a goal to reduce emissions by 50% by 2030.

Case Study:
New York City’s Clean Transportation Push

New York City has set ambitious climate goals, including electrifying its entire public bus fleet by 2040. The city is investing heavily in green infrastructure and plans to reduce emissions from its transportation sector, which accounts for nearly 30% of the city’s total emissions. This initiative is just one example of how local governments are driving climate action at the community level.

NGOs and Grassroots Movements

Beyond governments, NGOs and grassroots movements are pushing for real change at the local, national, and global levels.

  • Climate-Focused NGOs: Groups like Greenpeace and the Sierra Club are lobbying for stronger climate policies and supporting conservation projects worldwide.
  • Youth Activism: Movements like Fridays for Future, led by young climate activists, are mobilizing millions of students to demand immediate action on climate change from governments and corporations alike.

Highlight Box:
Youth-Led Climate Strikes

In 2019, youth activists organized the largest climate strike in history, with over 7.6 million people across 185 countries participating. This global movement, sparked by Fridays for Future, has elevated climate action to the forefront of public debate, proving that the voices of younger generations are driving the climate agenda.

Corporate and Startup Efforts

Companies are stepping up to the plate as well, recognizing both the responsibility and the economic opportunity in sustainability.

  • Corporate Commitments: Companies like Microsoft and Apple are aiming to become carbon-neutral or carbon-negative by 2030. Microsoft has pledged to remove more carbon from the environment than it emits, becoming carbon-negative by 2030.
  • Startups Innovating for Change: Startups like Climeworks are developing cutting-edge carbon capture technologies that can filter CO2 directly from the air.

Success Story:
Patagonia’s Environmental Leadership

Patagonia has long been a leader in corporate sustainability, integrating environmental responsibility into every part of its business—from its supply chains to its products. Patagonia donates 1% of sales to environmental causes and actively campaigns for the protection of natural habitats.

Looking Forward

Emerging Technologies

Technological advancements offer hope for mitigating climate change’s worst effects, with several promising developments on the horizon. However, challenges remain, particularly in the electric vehicle (EV) market.

The Promise & Challenge
  • Electric Vehicles (EVs): Major automakers had ambitious goals for EV production, but many, like GM and Ford, are now scaling back their targets due to lower-than-expected consumer demand, high prices, and challenges with charging infrastructure. Despite these setbacks, the push for EVs remains strong, with automakers still committed to transitioning to electric in the long term. Governments continue to offer incentives, and charging infrastructure is expanding, albeit slower than needed. The EV market is likely to see continued growth, though perhaps at a more gradual pace than initially forecasted.
  • Carbon Capture and Storage (CCS): Companies are developing technologies to capture CO2 directly from the atmosphere and store it underground or reuse it in materials like concrete and plastic.

Direct Air Capture © Climeworks

Innovation Spotlight: Climeworks
Direct Air Capture

Climeworks, a leading player in carbon capture, is scaling its direct air capture plants that filter CO2 from the atmosphere. This technology could help offset emissions from industries that are hard to decarbonize, offering a lifeline in the race to limit global warming.

Policy Trends

Governments are introducing innovative policies to accelerate the transition to a low-carbon economy.

Pricing & Investments
  • Carbon Pricing: More countries are adopting carbon taxes and cap-and-trade systems to incentivize emissions reductions. For example, Canada’s carbon pricing policy aims to reduce emissions by at least 40% by 2030.
  • Green Infrastructure Investments: The U.S. and Europe have pledged billions toward green infrastructure, focusing on renewable energy, energy-efficient buildings, and sustainable transportation systems.

Carbon Pricing Reduces Emissions and Drives Clean Energy

Polluters

Companies and individuals emit carbon when they use fossil fuels.

Carbon Pricing

Governments place a price on carbon emissions, making it more expencive to pollute.

Positive Impact

Carbon pricing results in:

Carbon Pricing Impact
  • Countries with carbon pricing have seen emissions drop by up to 3% anually.
  • $53 billion was generated globally in 2020 through carbon pricing, funding green energy projects.
  • Lower emissions: as companies and individuals shift to cleaner energy sources to avoid the cost of carbon pricing.
  • Funding for clean energy solutions – Revenue generated by carbon pricing is reinvested into renewable energy and sustainable infrastructure.

Societal Changes

Public awareness and consumer behavior are shifting, driven by increasing concern about climate change and its effects.

  • Public Consciousness: More consumers are prioritizing sustainability, demanding greener products and services from the brands they support.
  • Youth Movements: The rise of youth-led activism has brought climate justice to the forefront, pushing politicians and businesses to act more urgently on environmental issues.

Cultural Shift:

Sustainability Goes Mainstream

In recent years, sustainability has gone from niche to mainstream, with more companies integrating eco-friendly practices into their core missions, from fashion brands to tech companies. Consumers, especially younger generations, are demanding transparency and sustainability, forcing businesses to rethink their strategies.

What You Can Do to Help

Climate change can feel overwhelming, but individual actions add up. By making small changes in your daily life and supporting larger movements, you can be part of the solution.

Lifestyle Changes

Your daily habits have a direct impact on the planet. Here are a few ways you can make a difference:

  • Reduce Energy Consumption: Switch to energy-efficient appliances, use LED lighting, and unplug devices when they’re not in use. Adjust your thermostat a few degrees to save energy and lower your carbon footprint.
  • Support Renewable Energy: If possible, switch to a renewable energy provider for your home. You can also consider installing solar panels or participating in community solar programs.
  • Adopt Sustainable Transportation: Walk, bike, or use public transportation whenever possible. If you’re in the market for a new vehicle, consider switching to a hybrid or electric model. Even carpooling and reducing unnecessary trips can help lower emissions.

Advocacy

Beyond personal actions, your voice and participation in climate advocacy can drive systemic change.

  • Join Climate Movements: Get involved in local and global climate action groups. Organizations like Fridays for Future, Citizens’ Climate Lobby, and 350.org are always looking for volunteers, advocates, and supporters.
  • Vote with Climate in Mind: Make climate change a priority when voting in local, state, and national elections. Support candidates who prioritize environmental protection, sustainable policies, and green energy initiatives.
  • Support Environmental Organizations: Donate to or volunteer with organizations that are on the front lines of climate action. Whether it’s lobbying for policy change, protecting ecosystems, or raising awareness, these groups rely on community support to continue their work.

Conclusion

Climate change is a global challenge, but it’s also a personal one. The choices we make every day—how we power our homes, get around, and advocate for change—can make a real difference. While no single action will solve the crisis, together, our collective efforts can help slow the damage and protect the planet for future generations. The key is staying informed, taking small steps, and pushing for larger systemic changes where we can.

Additional Reading

The Coffee Crisis: How Climate Change is Impacting Your Favorite Brew

Climate Migration in the U.S.: Which Cities Are Most Threatened?

Rewilding Success: How Beavers Restored an Entire Ecosystem

Climate Justice: How Communities of Color Are Taking Action

Explore Climate Solutions in the Republic of Green Business Directory

Looking to make a difference? Discover companies in the Republic of Green Business Directory that are dedicated to helping you reduce your climate impact:

Sustainable Fashion Brands Climeworks: Shop eco-friendly clothing and accessories that reduce waste and emissions.

Solar Installers: Ready to harness the sun? Find top-rated solar installation companies in your area.

Electric Bike Brands: Switch to sustainable transportation with electric bikes that make commuting green and easy.

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