- Scientists question dark energy’s stability, raising new theories about the universe’s future
- Philadelphia Zoo celebrates historic birth of four Galapagos Tortoises
- First private mission to orbit over both poles lands safely in Pacific
- Microsoft celebrates 50th Anniversary: from Bill Gates’ first code to a $2.8 trillion legacy
- NASA astronauts return after challenging mission with Starliner setbacks and SpaceX rescue
- New device translates brain signals into spoken words in real time
- Arctic sea ice hits record low winter peak, raising climate concerns
- Wasp traps prey with spiny abdomen in amber-aged fossil find
- NASA astronauts set new record with historic 286-day space mission
- Grass-fed beef raises carbon concerns