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- Population immunity is slowing down the pandemic in parts of the US
- Russia says it has a covid vaccine called “Sputnik-V”
- The dwarf planet Ceres might be home to an underground ocean of water
- Is a successful contact tracing app possible? These countries think so.
- Mars may not have been the warm, wet planet we thought it was
- Software that monitors students during tests perpetuates inequality and violates their privacy
- “Am I going crazy or am I being stalked?” Inside the disturbing online world of gangstalking
- How falling solar costs have renewed clean hydrogen hopes