Scientists issue dire warning about global warming
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.
Project aims to track big city carbon footprints
Every time Los Angeles exhales, odd-looking gadgets anchored in the mountains above the city trace the invisible puffs of carbon dioxide, methane and other greenhouse gases that waft skyward. Full story
Carbon dioxide level crosses milestone at Hawaii site
WASHINGTON (Reuters) - The amount of climate-warming carbon dioxide in the atmosphere topped 400 parts per million at a key observing station in Hawaii for the first time since measurement began in 1958, the National Oceanic and Atmospheric Administration said on Friday. Full story
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More carbon dioxide in air than ever before
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.
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Red Bull Formula One driver Vettel 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
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)
