In a policy address last week, President Barack Obama made the reduction of greenhouse gas emissions in the United States a key priority in the nation's fight against climate change. Now, a newly released geological report points to a promising way to cut down on the amount of harmful carbon dioxide Full story
Some gullies scoring the sides of Martian sand dunes were likely carved by frozen chunks of carbon dioxide, also known as dry ice, a new study finds. Full story
William Happer, Princeton University professor, argues that rising carbon dioxide emissions are weakly linked to global warming and could actually increase agricultural productivity.
The amount of carbon dioxide in the atmosphere has surpassed a threshold that scientists say signals we are running out of time to reverse the impact of global warming. NBC’s Anne Thompson reports.
In his “Now We Know” segment, Chris Hayes notes that there was a particularly dramatic upward spike in carbon dioxide in just the last year.
The new Urban Mobility Report, released Tuesday, ranks Los Angeles second behind Washington DC for the worst traffic. The study took into account both time and money wasted, as well as carbon emissions.
Red Bull Formula One driver Sebastian Vettel of Germany sits in his car as he is cooled with dry ice during the third practice session of the Bahrain F1 Grand Prix at the Sakhir circuit, south of Manama April 20, 2013. REUTERS/Ahmed Jadallah (BAHRAIN - Tags: SPORT MOTORSPORT F1)