Astrobiology

Giant meteorite impact 3.26 billion years ago may have aided early life

Billions of years ago, long before anything resembling life as we know it existed, meteorites frequently pummeled the planet. One such space rock crashed down about 3.26 billion years ago, and even today, it's revealing secrets ...

Environment

Understanding the relationship between food waste, climate change and an aging population

Producing food and getting it to people's plates entails a significant expenditure of energy and resources. Unfortunately, approximately one third of all food produced globally is not consumed and discarded. Hence, to build ...

How vitamin D deficiency can lead to autoimmune diseases

As Canadians brace for "vitamin D winter"—months when the sun's angle is too low to produce the vitamin in the skin—a McGill University study explains why vitamin D deficiency early in life is associated with a higher ...

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Medical Xpress

Tech Xplore

Artificial 'nose' can sniff out damaged fruit and spoiled meat

Although smell has historically played an important role in the fight against diseases such as the plague and tuberculosis, the human nose is generally not sensitive enough to be used as a reliable diagnostic tool. However, ...

What motivates people to take action to prevent crime?

When private citizens disrupt a criminal event or avert a potentially dangerous situation, they are termed guardians, and the concept of guardianship forms the foundation of various crime-prevention strategies. Although guardianship ...

Tracking vampire worms with machine learning

Blood samples of patients infected with a parasitic worm that causes schistosomiasis contain hidden information that marks different stages of the disease. In our recently published research, our team used machine learning ...

New research shows the limitations of coordination in chemistry

A common assumption in chemistry is that the coordination number of a catalyst's surface determines the reactivity of the reaction it catalyzes. Strikingly, chemists from Leiden University have now proven that this is not ...

Researchers depict the formation of galaxies

An international team of astronomers, with researchers at Leiden Observatory playing a leading role, has mapped the fuel for galaxy formation in the iconic Hubble Ultra Deep Field. The results of the research have been accepted ...

Cuvier's beaked whale breaks record with 3 hour 42 minute dive

The blue whale might be one of the most enigmatic creatures on the planet, but the true megastars of the diving world are Cuvier's beaked whales (Ziphius cavirostris). They are capable of reaching depths of almost 3000 m, ...

CO2-free mobility: (how) is that possible?

Right now, everyone is talking about mobility, how it ought to be CO2 -neutral and clean. Yet how do we get there? Banning combustion engines, changing how we usually get around or gradually shifting towards electric vehicles ...

Image: Smoke lingers over western U.S. and Canada

Wildfires have been widespread in the western United States and Canada this year. Not only does wildfire bring untold damage and destruction to the area it burns, the smoke that the fire releases creates its own health and ...

Lignin waste modified for industrial bio-oil use

Lignin, a waste product in biomass and ethanol production, now finds new value as bio-oil in new products. At the University of Borås, Sweden, a team of researchers has investigated methods to extract and refine lignin for ...

What is the cause of dust concentrations over East Asia?

Dust, one of the major aerosol constituents of the global aerosol burden, is an active component in Earth's physical, chemical and biogeochemical cycles. In addition, dust aerosols induce adverse effects on social and economic ...

Hurricanes Irma and Jose: What we know

Hurricane Irma pummelled Florida on Sunday, killing three people after causing at least 27 deaths in a multi-billion-dollar rampage through the Caribbean.