A crash course in true political science

By Bullit Marquez (AP)

Science has provided the souped-up seeds to feed the world, through biotechnology and old-fashioned crossbreeding. Now the problem is the dirt they're planted in.

As seeds get better, much of the world's soil is getting worse and people are going hungry. Scientists say if they can get the world out of the economically triggered global food crisis, better dirt will be at the root of the solution.

Soils around the world are deteriorating with about one-fifth of the world's cropland considered degraded in some manner. The poor quality has cut production by about one-sixth, accor...

By Rob Griffith (AP)

Scientists said they have mapped the genetic makeup of the platypus _ one of nature's strangest animals with a bill like a duck's, a mammal's fur and snake-like venom.

The researchers, whose analysis of the platypus genome was published Thursday in the journal Nature, said it could help explain how mammals, including humans, evolved from reptiles millions of years ago.

The platypus is classed as a mammal because it has fur and feeds its young with milk. It flaps a beaver-like tail. But it also has bird and reptile features _ a duck-like bill and webbed feet, and lives mostly ...

By Rob Griffith (AP)

Scientists said they have mapped the genetic makeup of the platypus _ one of nature's strangest-looking animals with the beak of a duck, a mammal's fur and snake-like venom.

The researchers, whose analysis of the platypus' genome was published Thursday in the journal Nature, said it could help explain how mammals, including humans, evolved from reptiles millions of years ago.

The platypus is classed as a mammal because it has fur and feeds its young with milk. It flaps a beaver-like tail. But it also has bird and reptile features _ a duck-like beak and webbed feet, and lives ...

By Rick Rycroft (AP)

Koalas are threatened by the rising level of carbon dioxide pollution in the atmosphere because it saps nutrients from the eucalyptus leaves they feed on, a researcher said Wednesday.

Ian Hume, emeritus professor of biology at Sydney University, said he and his researchers also found that the amount of toxicity in the leaves of eucalyptus saplings rose when the level of carbon dioxide within a greenhouse was increased.

Hume presented his research on the effects of carbon dioxide on eucalyptus leaves to the Australian Academy of Science in Canberra on Wednesday.

The...

By (AP)

Remains of meals that included seaweed are helping confirm the date of a settlement in southern Chile that may offer the earliest evidence of humans in the Americas.

Researchers date the seaweed found at Monte Verde to more than 14,000 years ago, 1,000 years earlier than the well-studied Clovis culture.

And the report comes just a month after other scientists announced they had found coprolites _ fossilized human feces _ dating to about 14,000 years ago in a cave in Oregon.

Taken together, the finds move back evidence of people in the Americas by a millennium or more,...