A hyper-local study of vegetation shows that the city’s trees and grass often cancel out all the CO2 released from cars, trucks and buses on summer days.

Delegates from Columbia Climate School discuss the achievements and shortfalls of COP27, as well as what took place outside the negotiation room.

Moving from fossil fuels to solar panels, wind turbines and other renewable energy sources will by itself create a new stream of carbon emissions with the construction so much new infrastructure. The good news: Speeding the transition would greatly reduce this effect.

As the Arctic melts, permafrost there has the potential to send huge amounts of carbon into the atmosphere, but exactly how much is up for grabs, depending on what we do to stem climate change in coming years.

To keep the planet from warming more than 1.5°C above pre-industrial levels, economies must rapidly decarbonize. What will this involve?

Current methods to calculate the so-called social cost of carbon largely leave out how many future people our emissions will kill. This study tries to correct that.

Launched today, the Carbon Accounting Project will calculate products’ hidden costs and benefits.

The same level of emissions cuts reached during the pandemic would need to be repeated each year to achieve the goals of the Paris Agreement by 2030.

Although emissions temporarily dipped due to coronavirus, the numbers are bouncing back quickly as economies reopen.

For about 10 years, environmental law professor Karl Coplan has been trying to winnow down his direct footprint of CO2 emissions. He has been successful, and has just published a book chronicling his efforts.