ESA’s Integral has made the first unambiguous discovery of high-energy X-rays coming from a rare massive star at our cosmic doorstep, Eta Carinae. It is one of the most violent places in the galaxy,…

When the public considers competing arguments about a new technology’s potential risks and benefits, people will tend to agree with the expert whose values are closest to their own, no matter what…

Eu que pensava que fontes osteológicas eram apenas os museus ou as jazidas por onde andei!Afinal também existem outras fontes osteológicas... Imagens - Björn Johansson

Volcanoes are notoriously hard to study. All the action takes place deep inside, at enormous temperatures. So geophysicists make models, using what they know to develop theories about what they don’t…

Scientists from four well-known institutions say the next major disease like HIV/AIDS or SARS could occur in any of a number of developing countries concentrated along the equator. They encourage…

When European naturalists first visited the New World Tropics they saw vast forests that seemed untouched by humans. While indigenous people often lived in these forests, their populations were…

Dr. Tom Hansen has a vision for clean power. It’s big and bold. Dubbed the ‘Hansen Plan’ in a January 2008 Scientific American article, it would completely replace fossil fuels and nuclear power…

While studying towards his doctorate of philosophy, Anders Jørgensen discovered a previously undescribed species of parasite that infects farmed fish and produces serious disease. Single-celled…

As oceans warm and become more acidic, ocean creatures are undergoing severe stress and entire food webs are at risk, according to scientists at a press briefing this morning at the annual meeting of…

Farmers, food suppliers, policy-makers, business leaders and environmentalists are joining forces to confront the threat of the ‘forgotten greenhouse gas’ by taking part in an influential new forum…

Não sei se chore, se ria.Algumas ideias da conferência da American Association for the Advancement of Science, e sobre Saúde e Nutrição, onde se fala: …da pegada ecológica originada pelos excessos…

The Korean War lasted from June 1950 to July 1953. It served as the basis of the 1968 book MASH: A Novel About Three Army Doctors by Richard Hooker (pen name of former army surgeon H. Richard…

Scientists at UCL (University College London) have found the link between what we expect to see, and what our brain tells us we actually saw. The study, published in this week’s PLoS Journal of…

Supposedly nanobacteria are cell-walled organisms much smaller than the generally accepted lower limits for cell size. The existence of nanobacteria has been a hot topic because of their putative…

The Journal "Open Medicine" has published a very thoughtful editorial on "Open science, open access and open source software at Open Medicine" by Sally Murray, Stephen Choi, John Hoey, Claire Kendall…

People across the western hemisphere may be surprised to see a rust-colored Moon in the sky in a few days - an ominous omen to ancient people but a more predictable occurrence now. Early on 21…

The evolution of human speech was far more complex than is implied by some recent attempts to link it to a specific gene, says Robert Berwick, professor of computational linguistics at MIT. Berwick…

“Think globally, act locally” makes for a nice bumper sticker — but is it an effective policy for coping with global climate change? Can local actions make a difference in a process principally…

A team of scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado (CU) at Boulder, has shown that by sampling a person’s…

  I have written several columns about cell phones in the past.  Each one was due to milestones of growth.  The speed of growth in the use of cell phones continues to be astounding.…