Does the size of an animal determine the size of its sperm?
102291
'Length isn't everything. It's what's inside that counts' Also in this week's column:â¦
331050
Science & environment: Â· Scientists shed new light on disputed skeleton findÂ· Bone analysis supports distinct species theory
21854
Scientists in Australia have developed a sperm-sorting machine which may help infertile men to become fathers.
96070
A panda at the Memphis Zoo is definitely pregnant, officials there said Wednesday. Ya Ya, a giant panda, was artificially inseminated in January after she and a male companion failed at mating the old-fashioned way.
556414
Boffins in mutant albino batrachian IP brouhaha Japanese boffins have used artificial insemination to breed mutant frogs with transparent skin. The scientists reckon this will make biological research - not to mention school biology lessons - signifcantly less messy and traumatic, as it will no longer be necessary to cut the slime-filled creatures up in order to examine their innards.â¦
44675
Scientists have discovered a molecule that plays a key role in the development of sperm.
621010
KRUGER NATIONAL PARK, South Africa  - There are no  easy answers when it comes to keeping the world's largest land  mammal in check.
242906
Men who weigh too much are more likely to have poor sperm quality, research on nearly 1,600 young Danish men has found. Being too thin is a problem, too.
269459
By Munz, Tania  LORRAINE DASTON and GREGG MITMAN (eds.), Thinking with Animals: New Perspectives on Anthropomorphism. New York: Columbia University Press, 2005. Pp. vii+230. ISBN 0-2311.3038-4. Pounds 32.00, $49.50 (hardback).
263501
Openly identifying sperm donors doesn&#39;t seem to lead to problems for the donors or their biological children, according to a US study in the most recent issue of Human Reproduction.
136490
Beer bellies might take a toll on men below the belt, not just around it. Men who weigh too much are more likely to have poor sperm quality, research on nearly 1,600 young Danish men has found.
167506
A contraceptive that blocks male fertility has come closer with a study showing that it is possible to inoculate monkeys against their own sperm.
442609
Male Anole lizards signal ownership of their te
352246
Could it be possible, will laptop computers be responsible for a generation of infertile men? It may sound far-fetched, but if the latest results from a new study prove to be true, it just might become a reality.
143926
By Michael Stroh, The Baltimore Sun  Sep. 10--A flurry of new genetic and epidemiological studies is chipping away at a prized male myth: Sperm, it turns out, don't age as well as some men imagine.
387943
PHILADELPHIA: Beer bellies may take a toll on men below the belt, not just around it.Men who weigh too much are more likely to have poor sperm quality, research on nearly 1,600 young Danish men has found.
517304
The gigantic ocean-dwelling whale may have evolved from a land animal the size of a small raccoon, new research suggests. What might be the missing evolutionary link between whales and land animals is an odd animal that looks like a long-tailed deer without antlers or an overgrown long-legged rat, fossils indicate.