background preloader


Facebook Twitter

Advances in Medicine

Drew Berry: Animations of unseeable biology. Free Resources for Science Teachers and Students. Molecular Movies - Home. Hybrid Medical Animation - Anatomy reveal. Mitochondrial Biology Unit. How Big is a ... ? Six-Legged Giant Finds Secret Hideaway, Hides For 80 Years : Krulwich Wonders... No, this isn't a make-believe place.

Six-Legged Giant Finds Secret Hideaway, Hides For 80 Years : Krulwich Wonders...

It's real. They call it "Ball's Pyramid. " It's what's left of an old volcano that emerged from the sea about 7 million years ago. A British naval officer named Ball was the first European to see it in 1788. It sits off Australia, in the South Pacific. What's more, for years this place had a secret. A satellite view of Ball's Pyramid in the Tasman Sea off the eastern coast of Australia. Toggle caption Google Maps Here's the story: About 13 miles from this spindle of rock, there's a bigger island, called Lord Howe Island. On Lord Howe, there used to be an insect, famous for being big. Then one day in 1918, a supply ship, the S.S. Totally gone. There was a rumor, though. Some climbers scaling Ball's Pyramid in the 1960s said they'd seen a few stick insect corpses lying on the rocks that looked "recently dead.

" Ancient antibiotic-resistant bacteria found in isolated cave - Technology & Science. The samples were collected from a part of Lechuguilla Cave in Carlsbad Cavern National Park in New Mexico that has been cut off from any input from the surface for four million to seven million years.

Ancient antibiotic-resistant bacteria found in isolated cave - Technology & Science

(Max Wisshak/ University) Bacteria that have never before come in contact with humans, their diseases or their antibiotics, but are nevertheless resistant to a variety of antibiotics, have been discovered in a U.S. cave. A bees-eye view: How insects see flowers very differently to us. By MICHAEL HANLON Last updated at 08:52 08 August 2007.

A bees-eye view: How insects see flowers very differently to us

Beyond the Gardens: The Millennium Seed Bank Partnership. BBC Nature - Dinosaur gases 'warmed the Earth' 7 May 2012Last updated at 10:43 By Ella Davies Reporter, BBC Nature Apatosaurus, formerly known as Brontosaurus, produced a lot of wind Giant dinosaurs could have warmed the planet with their flatulence, say researchers.

BBC Nature - Dinosaur gases 'warmed the Earth'

British scientists have calculated the methane output of sauropods, including the species known as Brontosaurus. By scaling up the digestive wind of horses, they estimate that the total population of dinosaurs, produced 520 million tonnes of gas annually. They suggest the gas could have been a key factor in the warm climate 150 million years ago. David Wilkinson from Liverpool John Moore's University, and colleagues from the University of London and the University of Glasgow published their results in the journal Current Biology. Sauropods, such as Apatosaurus louise (formerly known as Brontosaurus), were super-sized land animals that grazed on vegetation during the Mesozoic Era.

Previous studies have suggested that the Earth was up to 10C (18F) warmer in the Mesozoic Era. Can a Jellyfish Unlock the Secret of Immortality? Quantum Biology.


Evolution. Plant Communication. Online Textbook of Bacteriology. Bacteria Make Drug-Like Molecules in Humans. Bacteria Make Drug-Like Molecules in Humans Janelle Weaver, PhD Small molecules that are produced by bacteria in the human body may represent a promising starting point for studying microbe-host interactions, and potentially a rich source of therapeutics.

Bacteria Make Drug-Like Molecules in Humans

Read more... Small molecules encoded by biosynthetic gene clusters are widely used in the clinic and constitute much of the chemical language of interspecies interactions. In a recent study, researchers used a systematic approach to identify more than 3,000 small-molecule biosynthetic gene clusters in the genomes of human-associated bacteria. “This study shows for the first time that our microbiota—the good microbes that live with humans—produce drug-like molecules to protect us from pathogens,” said lead study author Mohamed Donia of the University of California, San Francisco (UCSF). Thiopeptides are perhaps the most interesting of these molecules because they have potent antibacterial activity against Gram-positive species. Reference. Among Trillions of Microbes in the Gut, a Few Are Special.

In the mid-2000s Harry Sokol, a gastroenterologist at Saint Antoine Hospital in Paris, was surprised by what he found when he ran some laboratory tests on tissue samples from his patients with Crohn's disease, a chronic inflammatory disorder of the gut.

Among Trillions of Microbes in the Gut, a Few Are Special

The exact cause of inflammatory bowel disease remains a mystery. Some have argued that it results from a hidden infection; others suspect a proliferation of certain bacteria among the trillions of microbes that inhabit the human gut. But when Sokol did a comparative DNA analysis of diseased sections of intestine surgically removed from the patients, he observed a relative depletion of just one common bacterium, Faecalibacterium prausnitzii.

Rather than “bad” microbes prompting disease, he wondered, could a single “good” microbe prevent disease? Sokol transferred the bacterium to mice and found it protected them against experimentally induced intestinal inflammation. Gut Bacteria From Thin Humans Can Slim Mice Down. Bonnie Bassler: How bacteria "talk". Reprogrammed bacterium speaks new language of life - life - 17 October 2013. Read full article Continue reading page |1|2. The Experiment Is on Us: Science of Animal Testing Thrown Into Doubt. (Photo: ressaure)New scientific research has cast grave doubt on the safety testing of hundreds of thousands of consumer products, food additives and industrial chemicals.

The Experiment Is on Us: Science of Animal Testing Thrown Into Doubt

Everyday products, from soft drinks and baby foods, to paints, gardening products, cosmetics and shampoos, contain numerous synthetic chemicals as preservatives, dyes, active ingredients, or as contaminants. Official assurances of the safety of these chemicals are based largely on animal experiments that use rabbits, mice, rats and dogs. But new results from a consortium of researchers and published in the Proceedings of the National Academy of Sciences suggest such assurances may be worthless (Seok et al. 2013). The results of these experiments challenge the longstanding scientific presumption holding that animal experiments are of direct relevance to humans.