Stopping global warming requires cutting global carbon emissions roughly 45% from 2010 levels by 2030 and reaching net zero by around 2050. That’s a massive shift, but it breaks down into a handful of major changes that, together, can actually get us there. Here are five of the most impactful strategies, from the energy grid to your dinner plate.
1. Replace Fossil Fuels With Clean Energy
The single biggest lever for slowing global warming is transforming how we generate electricity. Burning coal, oil, and natural gas for power is the largest source of greenhouse gas emissions worldwide, and every coal plant replaced by wind, solar, or nuclear energy takes a permanent chunk out of the problem.
Clean power crossed a major milestone in 2024, surpassing 40% of global electricity generation for the first time. Renewable sources alone added a record 858 terawatt-hours of new generation that year, nearly 50% more than the previous record set in 2022. That’s real momentum. The challenge is that energy demand is also growing: fossil fuel generation still rose in 2024 to cover an additional 208 terawatt-hours of demand driven partly by extreme heat. So the transition has to outpace rising consumption, not just keep up with it.
What this looks like in practice is more solar panels on rooftops and in utility-scale farms, more wind turbines onshore and offshore, battery storage systems that can hold renewable energy for cloudy or windless days, and modernized power grids that can move clean electricity where it’s needed. Countries that invest in these systems now will lock in lower emissions for decades.
2. Overhaul Transportation
Transportation is the largest source of greenhouse gas emissions in the United States, responsible for 28% of the total in 2022. Globally, the pattern is similar: cars, trucks, ships, and planes burn enormous quantities of fossil fuel every day.
Switching to electric vehicles is the most direct fix for passenger cars, since EVs produce zero tailpipe emissions and get cleaner over time as the grid shifts to renewables. But electrification alone isn’t enough. Freight trucks, which are harder to electrify, are moving toward hydrogen fuel cells and more efficient logistics. Aviation and shipping, the toughest sectors to decarbonize, are exploring sustainable fuels made from waste biomass or green hydrogen.
Beyond technology swaps, reducing how much we drive matters too. Cities designed around public transit, protected bike lanes, and walkable neighborhoods cut emissions per person far more than swapping one car for another. A bus carrying 40 people uses a fraction of the fuel those 40 people would burn driving individually.
3. Protect and Restore Forests
Trees are remarkably effective carbon sponges. A large-scale analysis published in Science estimated that if existing forests were fully protected from logging, they could eventually absorb 138 gigatons of carbon. Restoring tree cover in areas where forests once stood could pull an additional 88 gigatons out of the atmosphere. For perspective, humanity emits roughly 10 gigatons of carbon per year, so the total sequestration potential of forests is enormous, even if it plays out over many decades.
This isn’t just about planting new trees, though that helps. Protecting the forests that already exist, particularly tropical rainforests and old-growth stands, prevents the carbon they’ve stored for centuries from being released all at once. Peatlands, mangroves, and wetlands also store massive amounts of carbon in their soils. When these ecosystems are drained or destroyed, they flip from carbon sinks to carbon sources.
Reforestation works best when it restores native ecosystems rather than planting monoculture tree farms. Diverse forests are more resilient to drought, disease, and fire, and they provide habitat, clean water, and other benefits that a single-species plantation can’t match.
4. Change How We Grow and Eat Food
Agriculture contributes to global warming in two major ways: through the methane that livestock and rice paddies release, and through the carbon lost when forests and grasslands are cleared for farmland. Methane is especially potent. Over a 20-year window, it traps 81 to 83 times more heat than the same amount of CO2. Even over 100 years, methane’s warming impact is 27 to 30 times greater than carbon dioxide’s. Cutting methane emissions delivers fast results because methane breaks down in the atmosphere within about a decade, unlike CO2 which lingers for centuries.
On the farming side, regenerative practices can turn agricultural soil into a carbon sink instead of a source. Techniques like planting cover crops, reducing tillage, and integrating trees into cropland (agroforestry) have been shown to sequester between 0.5 and 1.2 metric tons of carbon per hectare per year on arable land. On farms with woody perennials like vineyards or orchards, some practices store even more, with animal integration averaging over 2 tons of carbon per hectare annually.
Diet plays a surprisingly large role too. A study of UK residents published in Nature Food found that the greenhouse gas emissions of vegans were just 25% of those produced by high meat-eaters (people consuming 100 grams or more of meat per day). You don’t have to go fully vegan to make a difference. Even shifting a few meals per week from beef or lamb to chicken, beans, or lentils meaningfully lowers your food-related carbon footprint. Beef and dairy are the most emissions-intensive foods by a wide margin, so reducing those specifically has an outsized effect.
5. Slash Emissions From Buildings and Industry
The places where we live and work account for a huge share of energy consumption, mostly through heating, cooling, and hot water. Older buildings in particular leak heat through poorly insulated walls, windows, and roofs, forcing furnaces and boilers to work harder and burn more fuel. Upgrading insulation, sealing air leaks, and replacing gas furnaces with electric heat pumps can cut a building’s energy use dramatically. Heat pumps are two to three times more efficient than traditional heating systems because they move heat rather than generating it by burning fuel.
Heavy industry is a tougher problem. Making steel, cement, and chemicals requires extreme heat, and these processes release CO2 both from the energy used and from the chemical reactions themselves. Cement production alone accounts for roughly 8% of global emissions. New approaches include using electric arc furnaces powered by clean energy for steel, developing alternative cement formulations that require less heat, and capturing carbon directly from factory smokestacks before it enters the atmosphere. These technologies exist but need investment to scale.
Where We Stand Now
Based on the climate policies currently in place around the world, we’re on track for about 2.6°C of warming above pre-industrial levels by the end of this century. That’s well above the 1.5°C target scientists say would avoid the worst impacts, but it’s also well below the 4°C or higher trajectory the world was on just a decade ago. Progress is real, and accelerating the five strategies above is what closes the remaining gap.
None of these five approaches works in isolation. A world running on clean electricity makes electric cars and heat pumps far more effective. Regenerative farms and restored forests buy time while the energy transition scales up. Dietary shifts reduce the pressure to clear more land. Each strategy reinforces the others, and the math only works when they’re pursued together.