It’s the middle of the night, and you and your bed-partner are wide-awake running your hands over each other’s bodies. No, it’s not what it sounds like. You’ve got bedbugs.
Bedbugs have recently reinvaded American cities like New York, hiding in the tiny folds of mattresses and even cracks in walls, causing itching, redness and ultimately insomnia. Now scientists, publishing a new paper in the Journal of Medical Entomology, have done some intricate genetic detective work to find out how the critters have evolved a strong resistance to the insecticides used against them.
Paleontologists have excavated a plethora of feathered dinosaurs in China over the past few years have, but none of those dinosaurs had feathers like this. Scientists examining a news specimen of the dinosaur Beipiaosaurus have found imprints of a proto-feather that looks like the missing link between primitive downy feathers and the modern feathers seen on birds.
Researchers reveal that a 1.2 million-year-old female pelvis they found in Ethiopia in 2001 suggests our predecessors were larger-brained than previously thought
The story of evolution got bigger last week when researchers revealed in the journal Science that they had discovered a wide-hipped pelvis, suggesting our ancestors were larger-brained than formerly thought. The first of its kind, the 1.2 million-year-old, near-complete female pelvis is from the now-extinct Homo erectus species, believed to be our first human-like relative to leave Africa.
It seemed like an ordinary day in the primordial ooze, but romance was in the methane-ammonia air. An amoeba, pseudopoding along as usual, met and was enchanted by a particularly lovely photosynthetic bacterium. He took her inside his cell membrane, but instead of digesting her as he first planned, the two fused into a single organism. The bacterium gave the amoeba the new ability to absorb energy from sunlight, and their descendants became every plant in the world.
Whether you've had to make last-minute photocopies, cough up the last three dollars in your wallet to fetch coffee, or have your brilliant idea shot down in a meeting, everyone has had at least one boss who has been, let's face it, beastly. According to a new study, this behavior can be traced back to the hunter-gatherer days of our prehistoric ancestors.
Sometimes the smallest discovery lends itself to the biggest insight. That certainly was the case for University of Texas at Austin graduate student Christian Rabeling, who found a new ant species in the Amazon that is likely the descendent of one of the first ants to evolve on Earth more than 120 million years ago.
The results of the first national survey of teachers about evolution in their classrooms are in. Darwin would quiver in his boots to learn that in this day and age, one in eight American biology teachers teach creationism and intelligent design as a sound alternative to his theory. In fact, 13 percent of the country's teachers think they can run an excellent biology class without even mentioning Darwin or evolution.
Freedom from predators on an unusually isolated island has led to one very giant mouse and one very doomed bird population
By Matt RansfordPosted 05.21.2008 at 10:19 am 14 Comments
Widely recognized as the most important sea bird habitat on Earth, Gough Island is a geographically perfect place for the animals to raise their young. It is one of the most remote places in the South Atlantic, nearly 2000 miles from both Africa and South America and 220 miles from the next nearest island in its archipelago. It is this isolation which has allowed its ecosystem to remain a nearly perfect home for the 22 bird species that seek its shelter in order to breed.