Magnitude 4.0 earthquake shakes Texas, Oklahoma panhandles
US temporarily stops youth climate lawsuit days before trial
Breaching dams to save Northwest orcas is contentious issue
Europe, Japan send spacecraft on 7-year journey to Mercury
Laureates in Spanish awards call for action to "save future"
Wet and mild: Warm winter predicted for much of the US
Journal retracts stem cell work by former Harvard scientist
Startup plans to launch small satellites from Virginia coast
What's next for Paul Allen's big investments? It's not clear
Oldest fossils on Earth? New look finds might just be rocks
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