What you smell may influence emotions in your dreams, according to a new study.
When researchers gave dreaming subjects whiffs of rose scent, the subjects reported rosier dreams. The scent of rotten eggs, on the other hand, provoked unpleasant dreams, the study found.
The different scents were not incorporated literally into a person’s dreams, said study [...]

The fifth and final trip by shuttle astronauts to the Hubble Space Telescope will leave the historic satellite more capable than it has ever been, senior NASA officials said this week.
A shuttle mission scheduled for mid-October is set to deliver new components and undertake extensive in-space repairs—a first—on broken instruments attached to the orbiting [...]

Siberia’s last woolly mammoths descended from North American—not exclusively Eurasian—stock, according to new research.
Scientists studying DNA from the remains of 160 of the animals found the ancient beasts migrated back and forth between Eurasia and Alaska several times over hundreds of thousands of years.
Cousins of present-day elephants (learn more), woolly mammoths are believed [...]