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News & Comment

Early Earth may have had two moons

Early Earth may have had two moons

Martin Jutzi and Erik Asphaug

Collision with lost second satellite would explain Moon's asymmetry.

Earth may once have had two moons, which merged in a slow-motion collision that took several hours to complete. Traces of this 'other' moon linger in a mysterious dichotomy between the Moon's visible side and its remote farside.

News

Dark streaks guide search for life on Mars

Seasonal features could be seeping brines.
No turning back for light

'Optical diode' could help make commercial photonic chips a reality.
Brazil promises 75,000 scholarships in science and technology

3-billion-real investment aims to support students at home and abroad.
Urine predicts prostate cancer risk
Feature Neuroscience in China: Growth factor
Vampire bats turn down the heat sensors to hunt
Early Earth may have had two moons
Feature The challenge of microbial diversity: Out on a limb
Gene pool offers way to save Mexican oasis
Seven days: 29 July–4 August 2011
United States border fence threatens wildlife
Proteins chaperone drugs into development
Court quashes stem-cell lawsuit
Computing giants launch free science metrics
Bear researcher frozen out
Placenta to the rescue
Conflict disclosure plan dropped

Comment

Search needs a shake-up
On the twentieth anniversary of the World Wide Web's public release, Oren Etzioni calls on researchers to think outside the keyword box and improve Internet trawling.
Growth of genome screening needs debate
There could be unexpected consequences if greater understanding of disease genetics gives parents more choice in what they pass to their children, says David B. Goldstein.
Evolution: Not so selfish
A prescription for how human cooperation evolved will provoke much-needed debate about the origins of society, finds Peter Richerson.
Editorial Staying at home
Editorial Safe, not secure

We thought trouble was coming

Chris Funk

Chris Funk explains how his group last year forecast the drought in Somalia that is now turning into famine — and how that warning wasn't enough.

Reader comment

My 7th grade students have decided that the best way to deal with this situation is simply to include Birds with Dinosaurs.

Walt Owen on Archaeopteryx no longer first bird

Newsblog

Up-to-the-minute coverage of research and science policy.

04 Aug 2011 Senator urges White House not to weaken research conflict rule
04 Aug 2011 NIH taps versatile veteran to head new intramural stem cell center
04 Aug 2011 Horse researchers pick up the pieces after major fire
04 Aug 2011 If you can’t stand the heat, don’t build a nuclear reactor in your kitchen
04 Aug 2011 Gender wage gap smaller in science and technology

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No turning back for light

Nature News 04 Aug 2011
Dark streaks guide search for life on Mars

Nature News 04 Aug 2011
Brazil promises 75,000 scholarships in science and technology

Nature News 04 Aug 2011
Urine predicts prostate cancer risk

Nature News 03 Aug 2011
Vampire bats turn down the heat sensors to hunt

Nature News 03 Aug 2011

Commented

Climate-change politics: The sceptic meets his match

20 comments 27 July 2011
Archaeopteryx no longer first bird

12 comments 27 July 2011
Mosquitoes score in chemical war

12 comments 05 July 2011
Early Earth may have had two moons

10 comments 03 August 2011
The search for alien intelligence: SETI is dead — long live SETI

8 comments 27 July 2011

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