Reuters Science News Summary

Following is a summary of current science news briefs.

Into deep space: second U.S. firm takes aim at mining asteroids 2013-01-23T152435Z_4_BRE90L14F_RTROPTC_0_US-SPACE-MINING.XML () -

Adelie penguins: cool, efficient killing machines

TOKYO (Reuters) - Fish of the Antarctic, be very afraid. There's an unlikely stealth predator on the loose - Adelie penguins. Forget their ungainly waddling on land or comical bobbing at the ocean's surface. As soon as these penguins dive into the icy Antarctic ocean, they become calculating, efficient killing machines, say Japanese researchers.