(Phys.org)—Despite evidence that phenotypic change does not always occur uniformly across all species members and lineages, single size or shape traits are often used to represent species-level change in its entirety. Recently, ...
(PhysOrg.com) -- Mass extinctions occur repeatedly, though irregularly, throughout Earth’s history, and occasionally these extinctions have been devastating to life on our planet - or have they? Extinction events have sometimes ...
Nearly half of our DNA has been written off as junk, the discards of evolution: Sidelined or broken genes, viruses that got stuck in our genome and were dismembered or silenced, none of it relevant to the human organism or ...
Evolution
Oct 18, 2021
0
785
Viruses are tiny invaders that cause a wide range of diseases, from rabies to tomato spotted wilt virus and, most recently, COVID-19 in humans. But viruses can do more than elicit sickness—and not all viruses are tiny.
Evolution
Nov 18, 2020
7
166
Genetic mutation may drive evolution, but not all by itself. Physics can be a powerful co-pilot, sometimes even setting the course.
General Physics
Nov 27, 2017
1
199
During the earliest evolution on earth, life probably resembled one big genetic jumble. At some time, presumably around 3.8 to 3.5 billion years before today, the very first biological species appeared – the ancestor of ...
General Physics
Nov 23, 2015
32
324
University of Alberta researchers have uncovered physical proof that animals existed 585 million years ago, 30 million years earlier than all previous established records show.
Archaeology
Jun 28, 2012
31
0
A team of paleontologists has discovered the oldest animal with a skeleton. Called Coronacollina acula, the organism is between 560 million and 550 million years old, which places it in the Ediacaran period, before the explosion ...
Archaeology
Mar 8, 2012
23
1
Evidence for life on Earth stretches back billions of years, with simple single-celled organisms like bacteria dominating the record. When multi-celled animal life appeared on the planet after 3 billion years of single cell ...
Archaeology
Jul 27, 2009
3
0
(PhysOrg.com) -- Living beings and inanimate phenomena may have more in common than previously thought.
Evolution
Apr 28, 2009
4
0
