244 articles from THURSDAY 2.4.2020

Study suggests marijuana may impair female fertility

Female eggs exposed to THC, the psychoactive ingredient in marijuana, have an impaired ability to produce viable embryos, and are significantly less likely to result in a viable pregnancy, according to an animal study accepted for presentation at ENDO 2020, the Endocrine Society's annual meeting. The abstract will be published in the Journal of the Endocrine Society.

Subtle flavors

Evolution is a tinkerer, not an engineer. 'Evolution does not produce novelties from scratch. It works with what already exists,' wrote Nobel laureate François Jacob in 1977, and biologists continue to find this to be true.

Trial drug may block early stages of COVID-19, study in human cells shows

A drug already tested against lung disease could potentially inhibit COVID-19 by reducing the coronavirus load that enters the lungs and other organs. That is according to a study in human cell cultures and organoids by researchers at Karolinska Institutet in Sweden and the University of British Columbia (UBC) in Canada, published in the journal Cell.

Turning cells into computers with protein logic gates

New artificial proteins have been created to function as molecular logic gates. Like their electronic counterparts in computers, these biochemical tools can be used to program the behavior of complex systems, such as gene regulation inside human T-cells. This new advance might improve the durability of future cell-based therapies.

Using chemistry to unlock the difference between cold- and hot-brew coffee (video)

Cold brew may be the hottest trend in coffee-making, but not much is known about how this process alters the chemical characteristics of the beverage. Now, scientists report that the content of potentially health-promoting antioxidants in coffee brewed without heat can differ significantly from a cup of joe prepared the traditional way, particularly for dark roasts.

Want to stop consumer hoarding in times of crisis?

Consumer stockpiling and hoarding took center stage in recent months as the COVID-19 virus has spread around the world, and with it, panic buying on the part of millions. News broadcasts and social media feeds have been filled with examples of the worst aspects of human nature.

When three species of human ancestor walked the Earth

In a paper published this week in Science, an international team of scientists share details of the most ancient fossil of Homo erectus known and discuss how these new findings are forcing us to rewrite a part of our species' evolutionary history.

Whooping cranes form larger flocks as wetlands are lost -- and it may put them at risk

Over the past few decades, the endangered whooping crane (Grus Americana) has experienced considerable recovery. However, in a report appearing April 2 in the journal Heliyon, researchers found that habitat loss has led whooping cranes to gather in unusually large groups during migration. While larger groups are a positive sign of species recovery, the authors say that a disease outbreak or...

Animal tragic: New Zealand zoos strive to entertain lonely inhabitants amid lockdown

Rhinos keep turning up for their belly rubs, and giraffes have been keeping their appointments, but there is no one to watch themCoronavirus – latest updatesSee all our coronavirus coverageWhile humans have been using Netflix and Zoom to quell the coronavirus lockdown ennui, New Zealand’s zoo animals have also been struggling with boredom – and zookeepers have had to resort to some unusual...

Millions in UK 'could slip through virus wage safety net'

Some self-employed workers and high earners at risk despite subsidy plan, warn thinktanksCoronavirus – latest updatesSee all our coronavirus coverageMillions of people across Britain risk falling through gaps in the coronavirus wage subsidy plan and benefits system, according to two of the country’s leading economics thinktanks.After ministers hurriedly pulled together plans to increase the...