- robot dogs being tested for first time by police departments
- norad will not confirm nor deny that birds caused White House lockdown
- new study says bad dreams may have unexpected benefit
- insulating layer may be keeping underground oceans liquid on pluto
- round asteroid Hygeia may instead be a dwarf planet suggests astronomers
- mars photos show reptile as well as insect like forms claims entomologist
- ancient site older than machu picchu discovered in Peru
- astronomers release new image of interstellar visitor as it approaches earth
- nasa partners with multiple companies to send large payloads to the moon
- new theory of time crystals suggests they could run without outside help
