The Pliocene called. It wants its CO2 levels back.
May 13, 2019, 12:20 p.m. by Russell McLendon
Earth's atmosphere hasn't had this much CO2 in human history, and possibly not since the Pliocene Epoch about 3 million years ago.
If you really want to reduce your carbon footprint, have fewer kids and ditch your car
July 18, 2018, 8:21 a.m. by Noel Kirkpatrick
There are other steps you can take that aren't as drastic, but they'll help.
Carbon dioxide levels are reaching heights we haven't seen in 800,000 years
October 30, 2017, 11:08 a.m. by Noel Kirkpatrick
CO2 concentration in the atmosphere saw a sizable jump between 2015 and 2016.
Global carbon emissions stalled in 2016, offering a hint of progress
September 28, 2017, 5:22 p.m. by Christian Cotroneo
(But we still pumped more than 35 tons of CO2 into the atmosphere.)
Is climate change turning our vegetables into empty calories?
September 22, 2017, 8:58 a.m. by Christian Cotroneo
'Eating your greens' just isn't what it used to be.
Thousands of bulging methane bubbles could explode in Siberia
July 7, 2017, 1:04 p.m. by Michael d'Estries
Scientists estimate more than 7,000 dangerous methane 'bumps' have formed in the region over the last couple of years.
Carbon dioxide in Earth's atmosphere just reached a major milestone
September 29, 2016, 9:36 a.m. by Russell McLendon
CO2 data from Mauna Loa in Hawaii suggest 400 ppm is the new normal.
As U.N. makes history on Earth Day, Leonardo DiCaprio reminds us not to rest on laurels
April 22, 2016, 2:31 p.m. by Russell McLendon
More than 170 world leaders signed the Paris Agreement on Earth Day 2016, but that's just the beginning.
Ozone hole nears record-breaking size again
November 12, 2015, 10:56 a.m. by Elizabeth Newbern, LiveScience
The hole over Antarctica has actually been shrinking over the past few years.