Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit ...

Biology - Evolution

Apr 30, 2013 4.1 / 5 (16) 70 |

(Phys.org) —A team made up of American anthropologists and zoologists along with a demographer from Bangladesh has been comparing various models that have been developed over the years to explain population growth, and ...

Other Sciences - Social Sciences

Apr 30, 2013 3 / 5 (3) 1 |

Songbird populations can handle far more disrupting climate change than expected. Density-dependent processes are buying them time for their battle. But without (slow) evolutionary rescue it will not save ...

Biology - Ecology

Apr 25, 2013 3.7 / 5 (3) 1 |

Australia was first settled by between 1,000 and 3,000 humans around 50,000 years ago, but the population crashed during the Ice Age before recovering to a peak of some 1.2 million people around five centuries ...

Other Sciences - Archaeology & Fossils

Apr 23, 2013 4.8 / 5 (15) 3

Australian children are accessing social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" admitting they have chatted to someone online they do not know.

Technology - Internet

17 hours ago not rated yet 0

Overfishing has reduced fish populations and biodiversity across much of the world's oceans. In response, fisheries are increasingly reliant on a handful of highly valuable shellfish. However, new research by the University ...

Biology - Ecology

May 20, 2013 5 / 5 (1) 0

(Phys.org) —Seagrass along Moreton Bay will drastically decline as sea levels rise, a University of Queensland study has found. The study, published in international journal Global Change Biology this week, reveals that u ...

Space & Earth - Environment

May 15, 2013 5 / 5 (3) 0

(Phys.org) —Devastating at the time, the major floods of 2011 have since brought a vital benefit by recharging Australia's depleted reserves of underground water.

Space & Earth - Environment

May 14, 2013 5 / 5 (4) 0

The number of bears roaming the Pyrenees remained stable at a minimum of 22 last year, thanks largely to the continued virility of Pyros, the undisputed daddy of the colony.

Biology - Ecology

May 12, 2013 5 / 5 (2) 0

(Phys.org) —Geographic information systems – once limited to the domain of physical geographers – are emerging as a promising tool to study the past, as researchers are discovering for medieval history.

Other Sciences - Other

May 10, 2013 5 / 5 (4) 0

A novel gene associated with canine atopic dermatitis has been identified by a team of researchers led by professors Kerstin Lindblad-Toh, Uppsala university and Åke Hedhammar, SLU, Sweden. The gene encodes a protein called ...

Biology - Biotechnology

May 09, 2013 5 / 5 (2) 0

(Phys.org) —In a paper published today in the peer-reviewed science journal PLoS ONE, researchers have presented a new model to explore how changes in food availability might influence honeybee colony growth ...

Biology - Plants & Animals

May 08, 2013 not rated yet 0

Scientists say a disease destroying entire crops of cassava has spread out of East Africa into the heart of the continent, is attacking plants as far south as Angola and now threatens to move west into Nigeria, ...

Biology - Biotechnology

May 07, 2013 5 / 5 (2) 0

A satellite that will map the world's forests has been chosen for the seventh mission in Europe's Earth Explorer project, the European Space Agency (ESA) said Tuesday.

Space & Earth - Space Exploration

May 07, 2013 5 / 5 (1) 0

(Phys.org) —A series of new discoveries in plant cell biology will help to increase the supply of food and energy for our rapidly growing global population, according to 12 of the world's leading plant ...

Biology - Biotechnology

May 07, 2013 not rated yet 2