New DNA analysis gives more insight into the menu of prehistoric Greenlanders as far back as 2000 BC. Researchers found that bowhead whales, caribou and walrus were essential to survival of early Greenlanders. There weren’t any whale bones found around the investigated sites, which suggests that people scavenged whale meat elsewhere. Previously, information about the […]
More frequent vaping among teens linked to higher risk of cigarette smoking
There’s a link between e-cigarettes to combustible ones when it comes to teenage smoking habits, a new study found. Researchers assessed smoking habits of a group of teenagers over six months. They found that teenagers who vaped or used e-cigarettes were smoking more frequently and often switched to traditional tobacco products. This association was particularly […]
Older bonobos might need reading glasses, too
Bonobos may not ever encounter indistinguishable writing on a label or small print in a book, but they could still benefit from a pair of reading glasses. A new study found that a similar kind of age-related long-sightedness that affects humans also influences the quality of life for bonobos. But instead of the mild inconvenience […]
Wastewater treatment plants a neglected source of carbon emissions
As countries develop policies to address climate change following the Paris Agreement, it is important that no source of carbon emissions is overlooked. New research shows evidence of emissions from wastewater treatment plants that aren’t limited to organic human waste. The study suggests several methods of mitigating the detrimental effects of such emissions. Authors: Linda […]
Humans arrived in Australia’s interior earlier than previously thought
Southern Australia’s interior, with its dry hot summers and cool winters, doesn’t sound like the most inviting environment for early humans. Yet a new study found evidence that early settlers arrived in the Flinders Ranges around 49,000 years ago—nearly 10,000 years earlier than it was initially reported. The authors analyzed results of an excavation at […]
Hot spot for Mount St. Helens
The molten liquid core warming the famous volcano in Washington may be located near a neighboring mountain, a new study has found. Using seismic imaging, researchers analyzed the mantle below Mount St. Helens and found it to be completely cold, which indicates that magma is located elsewhere. These findings can be used to help determine […]
Chimps get by with a little help from their friends
Being in the company of friends is not only a cure for loneliness, but also a good way to relieve stress. New research observed overall lower levels of stress hormones in wild chimpanzees when surrounded by their peers. Interestingly, this isn’t just true for stressful situations—such as a confrontation from a rival chimp gang—but also […]
New research ranks causes for child stunting in developing countries 
As of 2011, nearly 40 percent of toddlers in 137 developing countries were stunted – a term used to describe children who are two or more standard deviations shorter than the global median. New research funded by the Canadian government offers a ranking of five main causes for stunted growth, with the leading causes described […]
Elephant poaching can hurt tourism, new study finds
In just seven years, from 2007 to 2014, the elephant population in Africa has been reduced by 30 percent – in large part as a result of poaching for ivory. This decline, aside from its disastrous consequences for the species, can also bring about major economic losses. A new modelling study has estimated a loss […]
MIT scientists create spinach that can detect explosives
Forget bomb sniffing dogs: the next big thing in explosives detection may be in your salad. A group of MIT researchers has created a type of spinach plant that can sense certain chemical compounds and even send an alert to a handheld device similar to a smartphone. Spinach plants can acquire this superpower through a […]
Keeping track of forests with satellite images
We can tell when deciduous trees’ photosynthesis cycles change, whether we’re aware of the phenomenon or not—we witness this every autumn, as the leaves change colour and fall off. But in evergreen trees, the colour change is much subtler and therefore harder to track. An international team of researchers found that sensor data from satellites […]
Want to escape predators? Become a synchronized swimmer
For fish, blending with the group can be a matter of life or death. Just like humans prefer either the right or the left hand as their dominant limb, fish choose either the right or the left as their dominant swimming direction. But unlike human dexterity, in this bias to turning either right or left […]
Young stars shine a light into stellar evolution
Half of all stars that are similar to the Sun in the center of our solar system have at least one companion. There are two leading theories explaining why stars form in multiples, and a recent study provides further physical evidence to support one of those theories. The evidence comes in the form of high-resolution […]
Human hunting contributed to cave lions’ extinction
One of the largest species of lions that ever lived, the Eurasian cave lion, became extinct around 14,000 years ago. For the first time, a new study finds a possible explanation for the decline of cave lions: hunting by Paleolithic humans. Cueto and colleagues examined nine fossilized cave lion toe bones from the Upper […]
Brain damage may be repaired by “replacement” cell transplants
Damage to the brain is one of the most difficult injuries to repair — in large part, because of the highly specialized functions of cortical cells. But a team of scientists from LMU Munich recently found that the damaged neural connections can be rebuilt by transplanting embryonic neurons into the affected areas of the brain. […]
New research on the arrival of HIV/AIDS to the United States
Much research has been done to determine the source of North American HIV/AIDS epidemic of the 1970s and 1980s. One of the most widely known studies supposedly identifies a single individual, ‘Patient Zero’, as the first known HIV-1 carrier in the United States. But recent research found that Patient Zero is unlikely to have been […]
