Researchers use the 120-foot tower atop Mauna Loa in Hawaii to collect air samples and measure the amount of carbon dioxide in the atmosphere. Mauna Kea looms in the distance.
Credit Joe Palca / NPR
Aidan Colton is a research scientist at the Mauna Loa Observatory. Here in the "carbon cycle room," he measures the amount of carbon dioxide, methane and carbon monoxide in air from intake ports at the top of a 120-foot tower outside the lab.
Climate scientists have a good reason to want to get away from it all. To get an accurate picture of the amount of carbon dioxide in the Earth's atmosphere, you have to find places where the numbers won't be distorted by cities or factories or even lots of vegetation that can have a major local impact on CO2 concentrations.
A supporter greets Imran Khan at a campaign rally on May 6, in Multan, Pakistan. Pakistan's parliamentary elections will be held on Saturday, and Khan's party is hoping the large, enthusiastic crowds at rallies will translate into a strong showing at the polls.
Children with autism see simple movements twice as fast as other children their age, a new study finds.
Researchers at Vanderbilt University and the University of Rochester were looking to test a common theory about autism which holds that overwhelming sensory stimulation inhibits other brain functions. The researchers figured they could check that by studying how kids with autism process moving images.