724,509 articles

Saliva test for cannabis could someday help identify impaired drivers

In the U.S., those who consume alcohol and drive are often subjected to roadside stops, breathalyzer tests and stiff penalties if their blood alcohol content exceeds certain limits. Currently, no such test exists for cannabis intoxication, although the substance is known to impair driving, among other activities. Scientists now report that they are one step closer to a convenient saliva test for...

How at risk are you of getting a virus on an airplane?

Fair or not, airplanes have a reputation for germs. However, there are ways to minimize the risks. This research is especially used for air travel where there is an increased risk for contagious infection or disease, such as the recent worldwide outbreak of the coronavirus, which causes COVID-19 disease.

New maps of Malaysian Borneo reveal worsening carbon losses along forest edges

Tropical forests are heavily fragmented as they are cleared for agricultural expansion and logging. Forest fragmentation leads to declines in carbon storage beyond just those trees that are cleared—the remaining forest at the edge of each clearing experiences environmental alterations such as increased sunlight and decreased soil moisture that can impact growing conditions for trees. These "edge...

Projecting the outcomes of people's lives with AI isn't so simple

The machine learning techniques scientists use to predict outcomes from large datasets may fall short when it comes to projecting the outcomes of people's lives, according to a mass study led by researchers at Princeton University in a collaboration with researchers across many institutions, including Virginia Tech.

Tree rings could pin down Thera volcano eruption date

Charlotte Pearson's eyes scanned a palm-sized chunk of ancient tree. They settled on a ring that looked "unusually light," and she made a note without giving it a second thought. Three years later, and armed with new methodology and technology, she discovered that the light ring might mark the year that the Thera volcano on the Greek island of Santorini erupted over the ancient Minoan...

'Immunity passports' could speed up return to work after Covid-19

German researchers studying how lockdown restrictions could be lifted for some peopleCoronavirus – latest updatesSee all our coronavirus coverage“Immunity passports” for key workers could be a way of getting people who have had coronavirus back into the workforce more quickly, scientists and politicians in the UK have suggested.Researchers in Germany are currently preparing a mass study into...

Covid-19: deaths outside hospitals to be included in UK tally for first time

ONS to publish additional data but chief medical officer doesn’t expect a large increase in reported deathsCoronavirus – latest UK updatesSee all our coronavirus coverageThe reported death toll from coronavirus in the UK is set to increase beyond the NHS’s daily tally on Tuesday when fatalities outside of hospitals are counted for the first time.Figures from NHS and Public Health England’s...

'They are leading us to catastrophe': Sweden's coronavirus stoicism begins to jar

There’s a surreal calm in the last country in Europe to hold out against lockdown. But the death toll is rising and some are voicing dissentCoronavirus – latest updatesSee all our coronavirus coverageThe Øresund Bridge – yes, that bridge – is an engineering marvel linking the Swedish city of Malmö and Copenhagen that normally transports 70,000 people daily. It has fallen eerily silent....

Univ. of Washington studies antimalarial drug’s use to head off COVID-19, with Gates Foundation’s aid

University of Washington researchers are among the leaders of a newly announced clinical trial investigating whether hydroxychloroquine, a drug that's commonly used to counter malaria and autoimmune disease, can prevent COVID-19. The multi-site trial, managed by UW in collaboration with New York University's Grossman School of Medicine, aims to determine definitively whether taking the...

Ecosystem services are not constrained by borders

What do chocolate, migratory birds, flood control and pandas have in common? Many countries benefit from ecosystem services provided outside their nations. This can happen through economic relationships, biological and geographical conditions, but we hardly know how and where these ecosystem service flows occur. Scientists at the Helmholtz Centre for Environmental Research (UFZ) and the German...

The desire for information: Blissful ignorance or painful truth?

We live in a time of unprecedented access to information. And in this era of sheltering-in-place around the nation and the globe, the desire for news may be higher than ever—at least for some people. But do we really want all this information, all the time? Some may indeed prefer to think happier thoughts and maintain an (overly) optimistic outlook about the health threat we face. On the other...

Hidden messages in protein blueprints

Scientists from the German Cancer Research Center (DKFZ) and the Heidelberg Institute of Stem Cell Technology and Experimental Medicine (HI-STEM) and the Max Planck Institute in Freiburg have identified a new control mechanism that enables stem cells to adapt their activity in emergency situations. For this purpose, the stem cells simultaneously modify the blueprints for hundreds of proteins...