The flora and fauna are sending signals about the impact of global warming – a message that is being heard in backyards around the world.

A study in the Jan. 2 edition of the British science journal Nature synthesized data from 143 scientific papers to examine whether a signal, or “fingerprint,” of climate change can be found in how animals and plants have reacted to increasing temperatures.

Among their findings: In the temperate zone, the researchers estimate that, for spe

Combining concepts from electromagnetic radiation research and fiber optics, researchers have created an extreme-ultraviolet, laser-like beam capable of producing tightly-focused light in a region of the electromagnetic spectrum not previously accessible to scientists. Between 10-100 times shorter than visible light waves, the extreme-ultraviolet (EUV) wavelengths will allow researchers to “see” tiny features and carve miniature patterns, with applications in such fields as microscopy, lithography an

Physicians have been concerned that relatively new prescription medications called statins, which are being increasingly prescribed to reduce blood cholesterol levels, might also decrease reproductive hormone levels and cause women of child-bearing age to be less fertile.

A study headed by researchers at Cedars-Sinai Medical Center in Los Angeles found that neither the use of statins nor low blood cholesterol levels significantly affected reproductive hormone levels in pre-, peri-, or postm

Quasars and active galactic nuclei (AGN) are likely powered by matter accretion onto a super-massive black hole located at their center. Before being swallowed by the black hole, matter spirals towards the center, while forming an accretion disc. Unfortunately, such a disc is too small so that one can in general solve it with present day telescopes. But the technique of radio interferometry with very long base (VLBI, with base length of the size of the earth’s radius) make it possible somehow. I

Scientists find key embryonic stem cell gene

Scientists have identified a gene that is required during early mammalian embryogenesis to maintain cellular pluripotency – the ability of an embryonic cell to develop into virtually any cell type of the adult animal. This discovery by Dr. Robin Lovell-Badge and colleagues at the MRC National Institute for Medical Research (London, UK) that the Sox2 gene is necessary to sustain the developmental plasticity of embryonic cells sheds new light

An experimental drug designed to cut off a tumor’s blood supply showed promising results in patients with advanced colorectal cancer when paired with standard chemotherapy, according to a UCLA Jonsson Cancer Center study published in the Jan. 1 issue of the Journal of Clinical Oncology.

The results of this and subsequent studies of the experimental drug Avastin could change the way oncologists treat patients with this devastating form of cancer, said Dr. Fairooz Kabbinavar, a Jonsson C