Ancient cave paintings depicted real horses

DNA evidences proves ancient cave paintings showing bay, black and spotted horses were based on the real world surrounding these early artists.

Mask-bot: a robot with a human face

Researchers create a robot face -- Mask-bot -- animated by the beam of an internal projector.

Nate Lewis on artificial photosynthesis

Plants use photosynthesis to make food from the sun's energy. Dr. Nate Lewis works to mimic that process to create a clean-burning fuel using water and sunlight.

Gabriela Salvador on Pro Mujer in Latin America

Gabriela Salvador said, "Women come to us for loans and we take the opportunity to reach out to them and give them health services and education."

Felipe Cabello on antimicrobial resistance and aquaculture

Can the use of antibiotics in aquaculture impact human health? A discussion by Felipe Cabello of New York Medical College about this issue..

Haibing Ma on China’s wind power woes

Haibing Ma of the Worldwatch Institute said many of China’s wind turbines can’t connect to the country’s larger electric grid.

Jawbone is earliest evidence of modern humans in NW Europe

New test of a prehistoric jawbone from England shows it to be between 44,000 and 41,000 years old - the earliest evidence of modern humans in northwest Europe.

Joel Cohen: Top 10 key population trends on Earth with 7 billion

How can we understand a world with 7 billion people? Population expert Joel Cohen explains the top population trends on a planet with 7 billion inhabitants.

World of 7 billion: What’s your number?

On October 31, 2011, the world population reached 7 billion people. Check out the "What's your number" calculators and find out your place.

Science this week – October 29, 2011

Science news for the week ending October 29, 2011 from EarthSky.