The secret was in the trees. Looking at tree rings from ancient trees, scientists in a new study say they've finally found the fingerprint of human-caused global warming on drought.
USA TODAY, USA Today: Nation
Wed, 05/01/2019 - 3:30pm
The secret was in the trees. Looking at tree rings from ancient trees, scientists in a new study say they've finally found the fingerprint of human-caused global warming on drought.