More than two years after the virus first appeared in China, we still do not know how it spread to the human population or which animal hosted the virus before this important event.
This is Katie Hunt, who stands for Ashley Strickland in this edition of Wonder Theory.
The Black Death was the world’s most devastating plague. Estimated to be Killed half of Europe’s population in just seven years during the Middle Ages.
Historians and archaeologists have been trying for centuries to pinpoint the source of this epidemic, and now science has come a long way.
Traces of the diseases that made our ancestors sick – including the plague pathogen – can be found hidden in ancient DNA from human remains.
The life of Mastoden, an elephant creature that roamed across North America 13,000 years ago, is illuminated by the study of its teeth.
For the first few years of his life, he was the son of an uncle – before moving out on his own, who now lived near home with a herd of women in Central Indiana. Mastodon He died at the age of 34, when another male mastodon had a puncture in the right side of his tooth. skull.
Across the universe
We have the most complete map of the Milky Way so far, our home galaxy, and it is showing us some beautiful things.
Hubble, another space telescope scanning the skies, discovered an equally fascinating cosmic event.
The difference between dominant male and female females One of nature’s most enduring gender stereotypes. A new book, Bitch: On the Female of the Species, dispels this misconception and tells a more complete story about the role of women in the wild.
According to author Lucy Cook, female creatures, like their male counterparts, are prejudiced, competitive, aggressive and dynamic, and play an equal role in advancing evolutionary change.
The weather has changed.
Unlike most polar bears, which hunt seals on sea ice and roam far and wide, this isolated population has adapted to live in a small habitat and hunt on freshwater glacier ice.
“If you are concerned about species conservation, then yes, our results are promising.” Said Kirsten Ledry, a polar research scientist at the University of Washington’s Applied Physics Laboratory. “But I don’t think so Glacier habitat will support a large number of polar bears. That’s not enough. “
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