Archive: 07/15/2008

How birds spot the cuckoo in the nest

It's not always easy spotting the cuckoo in the nest. But if you don't, you pay a high price raising someone else's chick. How hosts distinguish impostor eggs from their own has long puzzled scientists.

Jul 15, 2008 4.3 / 5 (6) 0

The 700-year-old Mexican mummy with a tummy ache

Remnants of the bacterium that causes stomach ulcers, Helicobacter pylori, (H. pylori) have been discovered in gastric tissue from North American mummies. A study of human remains believed to predate Colum ...

Jul 15, 2008 4.1 / 5 (7) 0

Fraud with cultured pearls can be detected

Scientists at the Johannes Gutenberg University Mainz (Germany) advise buyers of cultured pearls to be more vigilant. "In Germany too, we are increasingly seeing Chinese sweet-water cultured pearls being marketed as Japanese, ...

Jul 15, 2008 3.8 / 5 (5) 2