Humanity is Reaching its Limits - Oil, Debt, Population, etc.

Dolphins near Tangalooma, a resort located on Moreton Island, are gift givers of the best kind — they bring food to humans. Researchers observing the dolphin population saw 23 occurrences of this gift-giving, in which the dolphins approached humans bearing an octopus or fish they'd caught.

Forget the futuristic movies, Human Rights Watch is witnessing technology shape modern warfare today. That is why it is backing the efforts of a British group that on Monday launched the global “Campaign to stop Killer Robots.”

It sounds far-fetched, but scientists increasingly believe that animals – including people – will get smaller if global warming runs out of control. Researchers studying fossils laid down in what is now Wyoming the last time temperatures rose rapidly, some 55 million years ago found that animals – from horses to insects – adapted by downsizing.

The saber-toothed cat and American lion were some of the largest terrestrial carnivores in North America about 12,000 years ago. The cause of their extinction is debated among researchers, but a new study suggests they didn't starve to death.

“People respond to incentives.” So says the cornerstone of economics. But there’s nothing unusual about people in this regard.

Those who advocate making other intelligent species such as chimps as smart as humans fail to consider a number of ethical issues.