Animals tend to evolve toward larger size over time, study finds
Does evolution follow certain rules? If, in the words of the famed evolutionary biologist Stephen Jay Gould, one could "rewind the tape of life", would certain biological trends reemerge? Asked another way: ...
Ancient rocks show life could have flourished on Earth 3.2 billion years ago
A spark from a lightning bolt, interstellar dust, or a subsea volcano could have triggered the very first life on Earth. But what happened next? Life can exist without oxygen, but without plentiful nitrogen ...
Should we call the cosmos seeking ET? Or is that risky?
Astronomers have their own version of the single person's dilemma: Do you wait by the phone for a call from that certain someone? Or do you make the call yourself and risk getting shot down?
Stay or stray? Study delves into sexual behaviour
Scientists said Wednesday they had amassed the first evidence to back theories that people fall into two broad categories—promiscuity or faithfulness—when it comes to sex.
Best of Last Week – Popper's experiment realized again, unboiling eggs and the connection between Craigslist and HIV
How would the world change if we found extraterrestrial life?
In 1938, Orson Welles narrated a radio broadcast of "War of the Worlds" as a series of simulated radio bulletins of what was happening in real time as Martians arrived on our home planet. The broadcast is ...
Researchers find aldehydes in ices meant to simulate interstellar molecular clouds
Super-Earths have long-lasting oceans
For life as we know it to develop on other planets, those planets would need liquid water, or oceans. Geologic evidence suggests that Earth's oceans have existed for nearly the entire history of our world. ...
Detecting extraterrestrial life using mechanical nanosensors
Looking for life on other planets is not straightforward. It usually relies on chemical detection, which might be limited or even completely irrelevant to alien biology. On the other hand, motion is a trait ...
Ancient, hydrogen-rich waters discovered deep underground at locations around the world
A team of scientists, led by the University of Toronto's Barbara Sherwood Lollar, has mapped the location of hydrogen-rich waters found trapped kilometres beneath Earth's surface in rock fractures in Canada, ...
NASA scientist offers perspective on the factors that may lead to life on a planet
Researchers learn more about the possible role of gamma ray bursts on life extinction in the universe
Scientists re-create what may be life's first spark
Scientists in a lab used a powerful laser to re-create what might have been the original spark of life on Earth.
'Mirage Earth' exoplanets may have burned away chances for life
(Phys.org) —Planets orbiting close to low-mass stars—easily the most common stars in the universe—are prime targets in the search for extraterrestrial life.