Early Earth's chlorine blown away by giant impacts | Earth | Science News.

New research constructs ant family tree.

Humans may have reached the Americas 22,000 years ago – life – 25 April 2013 – New Scientist.

Memristor that “learns” provides blueprint for artificial brain.

Sea surface temperatures reach highest level in 150 years.

'Wintel' on the wane: Intel goes Google | Business Tech – CNET News.

3D printing 'could herald new industrial revolution'.

Speed of light may not be constant, physicists say – Science.

Gilead-Bristol Hepatitis C Drug Combo Cures All in Study – Bloomberg.

Science of 'Protein Origami' Unfolds – Yahoo! News.