The Big Picture: Nitrogen-rich star left a beautiful corpse

Engadget

A small minority of enormous stars explode in a fiery supernova after they run out of fuel and collapse.

'Drink When Thirsty' to Avoid Fatal Drops in Blood Sodium Levels During Exercise

newswise.com

For hikers, football players, endurance athletes, and a growing range of elite and recreational exercisers, the beist approach to preventing potentially serious reductions in blood sodium level is to drink when thirsty, according to 

Iron: A biological element?

news.wisc.edu

By studying iron extracted from cores drilled in rocks similar to these in Karijini National Park, Western Australia, UW-Madison researchers determined that half of the iron atoms had originated in shallow oceans

Scandium: The Element That Was Foretold

io9.com

One of the fun things about science is it allows people to be prophets without the need to grow a big beard and walk around the desert in a robe.

Ancient Carbon Haze Offers Clues to Galaxy Evolution

SPACE.com

Astronomers have detected carbon smog permeating the interstellar atmospheres of early galaxies, confirming that these ancient galaxies were mostly dust free

Single-nanocatalyst water splitter produces clean-burning hydrogen 24/7

nanowerk.com

NASA report details plutonium needs for planetary missions

scitation.aip.org

Stirling and fission power systems also may power future robotic and human explorations.