3,456 articles mezi dny 1.10.2022 a 31.10.2022

Elon Musk’s plans to revive Vine face one big problem: the reason it closed originally

Good news, everyone: Vine is (probably) coming back. The much beloved wacky short-form-video-sharing app had a short life in the limelight from 2012 to 2017, when it was cut off in its prime (as many would have it). That’s helped ensure that it holds a space in many millennials’ hearts as the last glorious stand of the social web before it became tarnished and commoditized and every app...

Scientists bring back Earth's 'memory' with mountaintop ice

Humans are fascinated by our planet's distant past. Since human recorded history only goes back a few thousand years, we probe Earth's "memory" in various ways to uncover its secrets. One of these methods is to hunt for traces from the past, also known as "proxies," which help scientists understand what Earth was like long ago.

Want to save the bees? Pay attention to pathogens and flowers

New research published in the journal Ecology conclusively shows that certain physical traits of flowers affect the health of bumblebees by modulating the transmission of a harmful pathogen called Crithidia bombi. In particular, the research, conducted by scientists at the University of Massachusetts Amherst, shows that the length of a flower's corolla, or the flower's petals, affects how this...

Watch an ice sheet melt—and Great Britain and Ireland emerge

Researchers have created the most realistic reconstruction yet of how a vast ice sheet advanced across northwestern Europe starting about 31,000 years ago and then retreated into oblivion, exposing landmasses that today are Great Britain and Ireland. The detailed chronology could improve forecasts of melting ice sheets in Antarctica and Greenland, which could devastate coastal regions...

Climate change to produce more rainbows, study finds

Climate change will increase opportunities to see rainbows, according to a new study led by researchers at the University of Hawai'i (UH) at Mānoa. The study's authors estimate that by 2100, the average land location on Earth will experience about 5% more days with rainbows than at the beginning of the 21st century.

New research on groundcherries bears new fruits

Over 34 million people in the U.S. don't have enough food. More diverse and adaptable crops are needed to address challenges in food production made worse by climate change. Small, sweet berries called groundcherries may not feed the country, but along with other related "orphan crops," they could strengthen food supplies. Unfortunately, these distant relatives of tomatoes aren't ready for...

Astronomers spot largest potentially hazardous asteroid detected in last eight years

Twilight observations with the US Department of Energy-fabricated Dark Energy Camera at Cerro Tololo Inter-American Observatory in Chile, a Program of NSF's NOIRLab, have enabled astronomers to spot three near-Earth asteroids (NEA) hiding in the glare of the sun. These NEAs are part of an elusive population that lurks inside the orbits of Earth and Venus. One of the asteroids is the largest object...

Combination microscopy and DNA analysis reveals new insights into the diet of polar cod

Polar cod is an important part of the food web of the Arctic. Sarah Maes (KU Leuven) and Fokje Schaafsma (Wageningen Marine Research) investigated the diet of polar cod from the Barents Sea, with the help of colleagues from the KU Leuven and the Alfred Wegener Institute. They did this by combining traditional microscopy with DNA analysis. The study resulted in new insights regarding the diet of...

Study reveals how ancient fish colonized the deep sea

The deep sea contains more than 90% of the water in our oceans, but only about a third of all fish species. Scientists have long thought the explanation for this was intuitive—shallow ocean waters are warm and full of resources, making them a prime location for new species to evolve and thrive. But a new University of Washington study, published in Proceedings of the National Academy of Sciences...

Efficient nanovaccine delivery system boosts cellular immunity

Cancer immunotherapies, such as immune checkpoint inhibition therapy, have been attracting attention in recent years as new methods for treating cancer. However, immune checkpoint inhibition therapy is only effective in 20%–30% of cancer patients, so developing better drug delivery systems to induce anticancer cellular immunity is necessary.