Archive for the ‘Reproduction and heredity’ Category


Celebrating Darwin and evolution - Thursday, February 5th, 2009

The theory of evolution is 150 years old, but forever young. We examine proofs for evolution, and four cool studies showing just how correct Charles Darwin was. Want to talk about silent crickets?



Bring in the clones: Sand dollars make small change - Thursday, March 20th, 2008

Minute sand dollar larvae, tasty morsels in a sea of famished fish, have a clever way to help ensure their genes are passed to the next generation.



Embryonic stem cells without the embryo! - Wednesday, November 21st, 2007

Scientists learn to make human embryonic stem cells without using eggs, embryos, or legal hassles. Adding four genes to skin cells did the trick.



Nobel goes to gene-knockouts. - Thursday, October 18th, 2007

A technology that revolutionized medicine and genetics gets the big Nobelian Nod. Cancer. Heart disease. Obesity. Research into virtually every major disease has gotten a boost from the Knockout Nobel!



Study finds key to colony-collapse disorder - Thursday, September 20th, 2007

Fast genomic analysis could open the door to breakthroughs in health, ecology and genetics. How do these machines work, and what have they taught about obesity, microbial diversity, and drug treatment?



Breeding dogs, breeding other animals - Thursday, August 9th, 2007

Football star convicted for bloody dog-fighting operation. What made the wolf turn into 400+ breeds of dog? How have farmers and animal breeders changed cattle and chickens? Why bother saving an old breed of horse?



Biodiversity: Species Form Faster Near Poles - Thursday, March 15th, 2007

Conventional wisdom says species form faster in the biodiverse tropics. But a new study shows fast speciation and extinction at the poles. Why didn’t we think up this study?



Mosquito Songs: Super Sexy? - Thursday, July 20th, 2006

After boy and girl mosquitoes meet, they synchronize their wingbeats. What does this tell us about how insects use sound?



Size of Sperm: Is Bigger Better? - Thursday, July 6th, 2006

Evolution favors tiny sperm, which boost a guys chance of fertilizing an egg. So why do some fruit flies make giant sperm?



Bread for All: New Origin of Wheat! - Thursday, March 30th, 2006

Was wheat tamed in 200 years or less? New information on the origin of agriculture in the Middle East shows the process may have taken millennia…


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