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210,321 articles from PhysOrg

Cyanobacteria: Small candidates as great hopes for medicine and biotechnology

An ever-growing global population, an increasing standard of living and environmental challenges such as anthropogenic climate change, ocean pollution, the declining availability of arable land and dwindling fossil resources—these are today's global challenges. Therefore, the German Federal Ministry of Education and Research has dedicated the Science Year 2020/21 to the topic Bioeconomy with the...

Turning a common plastic into high-value molecules

If you thought those flimsy disposable plastic grocery bags represented most of our plastic waste problem, think again. The volume of plastic the world throws away every year could rebuild the Ming Dynasty's Great Wall of China—about 3,700 miles long.

Researchers reveal why heat stress damages sperm

University of Oregon biologists have used the model organism Caenorhabditis elegans to identify molecular mechanisms that produce DNA damage in sperm and contribute to male infertility following exposure to heat.

Precision metrology closes in on dark matter

Optical clocks are so accurate that it would take an estimated 20 billion years—longer than the age of the universe—to lose or gain a second. Now, researchers in the U.S. led by Jun Ye's group at the National Institute of Standards and Technology and the University of Colorado have exploited the precision and accuracy of their optical clock and the unprecedented stability of their crystalline...

Plastic found in southern right whale in Argentina

Scientists found plastic debris in the digestive tract of a southern right whale stranded in Argentina, according to a study from the Southern Right Whale Health Monitoring Program, co-led by the University of California, Davis, School of Veterinary Medicine; and Instituto de Conservación de Ballenas in Argentina.

Fossil fuel subsidies need global reform, say experts

Fossil fuels still receive most of the international government support provided to the energy sector despite their "well-known environmental and public health damage," according to new research from Rice University's Baker Institute for Public Policy.

The new mode of climate governance

There is a great deal of confusion about the importance of global negotiations on climate change. Many people have the impression that what happens within their own country is unimportant, and that all the important policy-making is happening at the global level. In fact, the opposite is the case.

Coronavirus has the highest impact on nature-based tourism

The impact of the coronavirus pandemic on the field of natural resources varies significantly from one sector to the next. International travel to Finland has stopped altogether and increased domestic demand has not offered sufficient compensation. Markets for certain products in the forest sector have increased, while they have nearly collapsed for other products. Enterprises operating in...

New technologies to slash water consumption and to recover 30% of water and heat in industry

The European Parliament has set a new climate target for 2030—to cut greenhouse gas emissions by at least 55% compared to 1990 levels, up 40% on previous targets. Some industry groups criticize the new targets as being overambitious and too expensive while across Europe scientists and engineers have already joined forces ready to take on the new challenge. A key aspect is to develop new...

Demographic differences foster social ties in online support groups, study finds

Millions of adults in the U.S. join online support groups to help them attain health goals, ranging from weight loss to smoking cessation. In their quest to make connections, members have a tendency to hide demographic differences, concerned about poor social integration that will weaken interpersonal ties. However, according to a recent study led by the University of California, Irvine, sharing...

Christine Jessop's killer identified: Solved cold case raises questions about genetic privacy

On Oct. 15, Toronto police announced that they had finally solved the 1984 murder of Christine Jessop using DNA evidence and genetic genealogy websites. Identifying Calvin Hoover as Jessop's killer has provided immense relief to the family and those close to the case, and in particular to Guy Paul Morin, who was wrongfully convicted and later exonerated after serving 18 months in prison.

Call to restore Indigenous names for plants and animals

Indigenous names for plants and animals should be restored within the scientific naming system according to AUT's Professor Len Gillman and University of Auckland's Dr Shane Wright. Their proposal was published today in Communications Biology.