Rhitu Chatterjee appears in the following:
Tuesday, September 17, 2013
Layers of wax in the marine mammals' ears can be read like tree rings, scientists say, recording a whale's age and also information about pollutants in the water the whale swam through. Wax from a blue whale that washed ashore in 2007 contained surprisingly high levels of DDT.
Thursday, August 15, 2013
This cousin of the raccoon is the first new carnivore discovered in the Western Hemisphere in 35 years. Native to the Andes Mountains of Colombia and Ecuador where it's still living, the olinguito was actually first identified in a Field Museum specimen storage room in Chicago.
Wednesday, August 07, 2013
Scientists have known that dolphins recognize each other by the sound of each animal's signature whistle. But new research shows that dolphins remember and respond to these whistles for an incredibly long time — even after they've been separated from each other.
Friday, July 26, 2013
Over drinks in the light of a full moon, a group of Swiss sleep researchers recently realized they could put a bit of folklore about the moon's disruptive effect on sleep to the test. The answer surprised them and didn't quite win over some other scientists in the field.
Monday, July 22, 2013
Dolphins, like humans, are part of complex social networks. And research now indicates that they use their unique whistle sounds to identify and communicate with each other. "Every time a dolphin heard its signature whistle, it called back, sometimes multiple times," one researcher says.
Wednesday, July 17, 2013
The number of babies born with the life-threatening disease will climb by a third in the next 40 years, scientists say. The vast majority of sickle cell cases will occur in developing countries, which don't have the resources to treat deadly complications arising from the genetic disorder.
Wednesday, July 10, 2013
A few dog breeds indigenous to North America have genetic roots on the continent that stretch back 1,000 years or more. A study finds that their genetic lineages haven't changed much, despite an influx of European pooches.
Monday, July 08, 2013
Archaeologists had considered Iran unimportant in the history of farming – until now. Ancient seeds and farming tools uncovered in Iran reveal Stone Age people there were growing lentils, barley and other crops. The findings offer a snapshot of a time when humans first started experimenting with farming.
Thursday, June 27, 2013
Being able to throw stones with power and precision must have been fun for humans' early ancestors. It was essential, too, since we lack the the fangs and claws of other predators. A recent study suggests the ability to fire rocket fastballs depends on shoulder anatomy that chimps don't share.
Thursday, June 20, 2013
The first comprehensive global study to be conducted finds that domestic violence kills many women and leaves others with long-standing physical and mental health problems, including sexually transmitted diseases and depression.
Wednesday, June 19, 2013
A keen eye and extensive knowledge of feathers allows forensic ornithologist Carla Dove (yes, that's her name) figure out from feather and bone fragments which type of bird crashed into a plane or was eaten by a snake. But the expertise has an uncertain future.
Friday, June 14, 2013
Though the regulation proposed by the Fish and Wildlife Service would make it more difficult to use chimpanzees for research purposes, that may not be a problem, some scientists say. Scientific advances show the animals are less medically useful than previously thought.
Thursday, June 13, 2013
Cheetahs don't often hunt at their top speed, scientists are finding. Come mealtime, what matters most is the animals' ability to accelerate and to take tight corners.
Monday, June 10, 2013
City life can be harsh on people. For example, it pushes people to work longer and sleep less. A new study suggests that city life can have a somewhat similar effect on birds too. It shows urban blackbirds wake up earlier and go to bed later than their forest dwelling cousins.
Friday, May 24, 2013
Itch can be a useful warning sign, or a maddening symptom with no cure. But the origins of itch have long been a mystery. Scientists think they've come closer to understanding the origins of itch in a molecule that makes mice scratch like mad.
Monday, May 13, 2013
The appeal of owning your own property — and all the private goods that came with it — may have convinced nomadic humans to settle down and take up farming. So says a new study that tried to puzzle out why early farmers bothered with agriculture.
Tuesday, May 07, 2013
The Pallas' long-tongued bat has a neat trick at the tip of its tongue — tiny hairlike structures that fill with blood and stand straight out. This turns the tongue into a nectar-slurping mop at just the right time.