The rise of the first complex life depended on vital metals brought up to the Earth's surface from far below in vast granite deposits, a new study argues.

Space & Earth - Earth Sciences

Aug 07, 2012 4.4 / 5 (7) 13 |

When faced with impossible circumstances beyond their control, animals, including humans, often hunker down as they develop sleep or eating disorders, ulcers, and other physical manifestations of depression. ...

Biology - Plants & Animals

Apr 18, 2013 3.4 / 5 (9) 5 |

Some of the largest female birds in the world were almost twice as big as their male mates. Research carried out by the Zoological Society of London (ZSL) shows that this amazing size difference in giant ...

Biology - Plants & Animals

Apr 09, 2013 4.3 / 5 (6) 2 |

Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, ...

Biology - Plants & Animals

Jan 23, 2012 4.4 / 5 (5) 0 |

Scientists are a step closer to explaining one of the most enduring mysteries of modern biology; why are there males and females?

Biology - Evolution

Dec 19, 2011 5 / 5 (4) 2 |

In the bird world, male and female blue tits are hard to distinguish for the human observer. However, in the UV-range, visible to birds, the male is much more colourful. A closer look at the monogamous mating ...

Biology - Evolution

Apr 03, 2013 5 / 5 (4) 0 |

Fears that sex-linked chromosomes, such as the male Y chromosome, are doomed to extinction have been refuted in a new genetic study which examines the sex chromosomes of chickens.

Biology - Biotechnology

May 08, 2012 4.8 / 5 (4) 2 |

It has long been believed that male lions are dependent on females when it comes to hunting. But new evidence suggests that male lions are, in fact, very successful hunters in their own right. A new report ...

Biology - Plants & Animals

Mar 18, 2013 4.8 / 5 (4) 0 |

(Phys.org) —Sex determining genes in marsupials have shed some light on how the Y chromosome, which determines the male sex in humans, will quickly degenerate and eventually disappear, according to a world-renowned evolutionary ...

Biology - Biotechnology

Apr 03, 2013 2.8 / 5 (6) 5

Extreme 'housework' cuts the life span of female Komodo Dragons

Biology - Plants & Animals

Oct 17, 2012 5 / 5 (3) 3 |

(Phys.org)—Hairless skin first evolved in humans as a way to keep cool—and then turned into a canvas to help them look cool, according to a Penn State anthropologist.

Biology - Evolution

Feb 17, 2013 3 / 5 (4) 16 |

(PhysOrg.com) -- In a new study titled Male-Female Coevolution in the Wild: Evidence from a Time Series in Artemia Franciscana and published in Evolution, evolutionary ecologist Nicolas Rode from the Cent ...

Biology - Evolution

Jun 20, 2011 3.7 / 5 (3) 1 |

Male nursery web spiders (Pisaura mirabilis) prepare silk-wrapped gifts to give to potential mates. Most gifts contain insects, but some gifts are inedible plant seeds or empty exoskeletons left after the pr ...

Biology - Plants & Animals

Nov 13, 2011 5 / 5 (2) 5 |

What do you get when you dissect 10 000 fruit-fly larvae? A team of researchers led by the European Molecular Biology Laboratory in the UK and the Max Planck Institute of Immunobiology and Epigenetics (MPI) ...

Biology - Biotechnology

Jul 19, 2012 5 / 5 (2) 0 |

Female animals are unfairly sexually stereotyped by researchers, according to experts at the University of St Andrews.

Biology - Plants & Animals

Mar 01, 2013 4.5 / 5 (2) 2