West African scientists warn of weakening health systems and urge stronger outbreak detection - Toronto Star

The spacecraft delivered materials and equipment for new research studies to the station.

ORCID: orcid.org/0000-0001-8061-88361, Yaser Mehri2, Ali Abdolrazaq Sabbar3, Mohammad Javad Nahvinia3 & … Mohammad Hosein Omid2 We’re sharing this article early to provide faster access to peer-reviewed, accepted research. It is citable and carries a permanent DOI. This version is subject to further edits and will be replaced automatically by the final Version of Record. All legal disclaimers apply.

The history of life on Earth doesn’t start with the Cambrian Explosion. However, this was the point in time that nearly all major animal groups appeared, proliferated, and diversified. It wiped out 90% of life on Earth, turned the oceans into graveyards – and it very nearly ended life on our planet entirely

AcknowledgementsWe would like to thank Prof Alex Sigal (African Health Research Institute, South Africa) for providing the H1299 ACE-2 cell line used in the study. We thank the patients and their families for making this study possible. FundingResearch reported in this publication was supported by the South African Medical Research Council (SA MRC; grant number: 6803/CO AP 2021) with funds received from the Department of Science and Innovation. The content and findings reported/illustrated are the sole deduction, view and responsibility of the researcher and do not reflect the official position and sentiments of the SA MRC.

Mud from a fjord shows an Atlantic air pattern brought wetter, colder spells to southern Greenland, a clue to how its ice may fare. Greenland’s ice is shrinking as the planet warms. But in the island’s southwest, rainfall and snowfall have been influenced by the same North Atlantic air-pressure pattern for at least 5,000 years. When that pattern tipped one way, the region turned wetter and colder. The record comes from mud on the floor of a Greenland fjord, and it suggests snowfall, not only temperature, shaped how the area’s ice grew and shrank. It doesn’t yet show how glaciers there will respond to the warming ahead. Johan Faust, a researcher at MARUM, the Center for Marine Environmental Sciences at the University of Bremen in Germany, led the work with colleagues in Germany, Norway, Denmark and Canada. A seesaw in the airThe pattern is called the North Atlantic Oscillation. It’s the difference in air pressure between a low that sits near Iceland and a high near the Azores, and it’s strongest in winter. When that difference is large, the pattern is in its positive phase. Northwestern Europe and southwestern Greenland both get more rain and snow.