Archive: 08/16/2007

Mother's little helpers

An Australian bird has been found to produce smaller, less nourishing eggs when it breeds in the presence of other ‘helper’ birds that provide child-care assistance. This unique adaptation enables the ...

Aug 16, 2007 5 / 5 (1) 0

All change at the Earth's core

It is hard to know what is going on over 3000 km beneath our feet, but until recently scientists were fairly confident that they understood the way the iron atoms in the Earth’s core packed together. However, ...

Aug 16, 2007 4.5 / 5 (80) 0

New caledonian crows find 2 tools better than 1

Researchers have found that New Caledonian crows—which are known to make complex food-getting tools in the wild—can also spontaneously use one tool on another to get a snack. The researchers report their findings online ...

Aug 16, 2007 4.7 / 5 (18) 0