Aerosol pollution may have suppressed global warming and increased Arctic sea ice from 1950-1975.
Scientists use cave spider populations to plot climate change and threats to species.
John Bates stands by accusations that 2015 study was rushed and biased, but says he only guessed that motivations were political.
Two analyses of ecological research projects warn that natural processes in the soil increase the threat of global warming.
Clams made yearly temperature records centuries before we took measurements.