World

Getting an antibody test to see if you had Covid-19 months ago is pointless, according to guidelines issued this week by a major medical company. Many tests are inaccurate, some look for the wrong antibodies and even the right antibodies disappear, said experts at the Infectious Diseases Society of America, …

Credit: Unsplash / CC0 Public Domain Researchers from the University of Central Florida make the leading field of attosecond science more accessible to researchers from all disciplines. Their method of opening up the field is detailed in a new study published in the journal today Science Advances. An attosecond is …

The U.S. economy gained momentum this month as companies shook the effects of the pandemic-induced decline, although yields in other parts of the world were slower, according to new research from purchasing managers. The data released Friday suggests that U.S. companies will look back on demand when they reopen from …

Greenland lost a record amount of ice during an extra warm 2019, with the melt massive enough to cover California in more than four feet (1.25 meters) of water, a new study said. After two years when summer ice melting was minimal, last summer broke all records with 586 billion …

CAIRO – Rival political leaders in Libya announced a direct cease-fire on Friday, calling for talks to demilitarize Sirte, the coastal city that has become the focus of international efforts to break the stalemate conflict in the oil-rich, but dysfunctional nation of North Africa. The announcement was welcomed by the …