Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

11.22.2008

Mushrooms Growing in International Space Station

According to Aleksandr Sprin with the Russian mission control:

"If there’s not enough ventilation in the bathroom then, because it’s damp, the bacteria grows into a fungus. The cosmonauts were apparently hanging their wet towels in the bathroom and then they noticed that on the back wall there were fungi (or mushrooms) growing. The fungi are now being removed with some chemical cleaner."

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Researchers Stumble Upon New Penguin Species

Researchers have stumbled upon the remains of a previously unknown species of penguin that pre-dates the Polynesian settlement of New Zealand nearly half a century ago.

Australian and New Zealand researchers, from the University of Adelaide and the University of Otago, were studying fossils they believed to be of the more commonly known, and now endangered, yellow-eyed penguin when DNA tests revealed they actually belonged to a new species, the Waitaha penguin.

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11.21.2008

Which Came First, the Chicken or the Egg? Scientists Dig Deeper

Well, it’s still unclear whether chicken eggs or chickens came first (the intended question in the original riddle), said Darla Zelenitsky, a paleontologist of the University of Calgary in Alberta who was the first scientist to closely analyze the dinosaur nest.

But interpreted literally, the answer to the riddle is clear. Dinosaurs were forming bird-like nests and laying bird-like eggs long before birds (including chickens) evolved from dinosaurs.

"The egg came before the chicken," Zelenitsky said. "Chickens evolved well after the meat-eating dinosaurs that laid these eggs."

So the original riddle might now be rephrased: Which came first, the dinosaur or the egg? Meanwhile, the new nest provides some of the strongest evidence in North America in favor of the bird-like egg over the chicken.

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11.19.2008

Knee Injuries Could be Healed by 'Living Bandage' Made from Stem Cells

Scientists at Bristol University have now managed to heal cartilage tissue in a laboratory with stem cells taken from a patient's own bone marrow. They placed the cells inside the tear, held in place by a spongy scaffold made from collagen, and found the stem cells brought the two pieces of torn cartilage together.

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11.10.2008

Earth Can't Cope, New Planets Needed

"people are turning resources into waste faster than nature can turn waste back into resources."

Hmm...

The Life Catalyst Discovered

Scientists propose