Lioness at Indianapolis Zoo kills her longtime mate
Medtronic co-founder who created wearable pacemaker dies
Young climate activists say their lawsuit should go to trial
AP Exclusive: Stephen Hawking's wheelchair, thesis for sale
Japanese Nobel chemistry laureate Shimomura dies at 90
Magnitude 4.0 earthquake shakes Texas, Oklahoma panhandles
Trump space force - a real need but hazy planning
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"
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