News
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PaleontologyEarliest tree-dweller, burrower join mammal tree of life
Fossils show mammal ancestors did a lot more than cower in dinosaurs’ shadows.
By Susan Milius -
ClimateWorst drought in a millennium predicted for central and southwest U.S.
Comparing reconstructions of past drought conditions with models of future dryness shows that the Central Plains and Southwest U.S. will become the driest in a millennium.
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AnimalsWhen you’re happy and you show it, dogs know it
A new test using pictures of halves of human faces challenges dogs’ abilities to read people’s emotions.
By Susan Milius -
Health & MedicineU.S. measles tally for 2015 now at 121 cases
The 2014–2015 measles outbreak in the United States has now reached people in 17 states and the District of Columbia.