Livable Planet

UN climate summit asks for 'specific actions' to hit Paris targets

Secretary-General António Guterres has asked countries to come to the UN summit with specific plans for how they intend to cut carbon emissions in line with the most recent science, which says global greenhouse gas emissions must fall 45% by 2030 and reach net zero by 2050 to avoid the worst impacts of climate change.

Climate Change

Why 2020 is a key year for climate action

The UN climate report found that limiting warming to 1.5 degrees Celsius (or 2.7 degrees Fahrenheit) this century is still technically possible. But to keep that possibility alive, the world would have to cut its global greenhouse gas emissions by a whopping 45% from 2010 levels by 2030.

Environment

The Mississippi: Pushed to the brink

Updated

Up and down the Mississippi River, new pressures are being put on America’s inland hydro highway, which helps deliver US goods and commodities to the rest of the world and allows trade flows to return. The strain on the river system is only becoming more acute with the impacts of climate change.

Pages

Environment

Take air. Suck out CO2. Make fuel. A lab advance hints at a future for artificial photosynthesis

Researchers believe that artificial photosynthesis that sucks excess CO2 out of the air could one day help fight climate change. But capturing the gas is only half the challenge. The other half is what to do with it once you've got it. Lauren Sommer reports on a potentially breakthrough technology that uses artificial photsynthesis to turn CO2 from the air into industrial chemicals and natural gas.