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A giant elliptical galaxy seen in an image from the Hubble Space Telescope is the closest gravitational lens yet known, according to information released by the Hubble Heritage Project Tuesday (Feb. 6).

John Blakeslee, an assistant professor with the Department of Physics and Astronomy at Washington State University, working with colleagues from the University of Hawaii and the University of Durham in England, targeted the galaxy for a closer look by Hubble.

Elliptical Galaxy ES) 325-G004 in the Abell Cluster S0740. (Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA) / Acknowledgment: J. Blakeslee (Washington State University))

A greenhouse gas that has become the bane of modern society may have saved Earth from completely freezing over early in the planet's history, according to the first detailed laboratory analysis of the world's oldest sedimentary rocks.

Scientists have for years theorized that high concentrations of greenhouse gases could have helped Earth avoid global freezing in its youth by allowing the atmosphere to retain more heat than it lost.

Many human proteins are not as good as they might be because the gene sequences that code for them have a double role which slows down the rate at which they evolve, according to new research published in PLoS Biology.

By tweaking these dual role regions, scientists could develop gene therapy techniques that produce proteins that are even better than those found in nature, and could one day be used to help people recover from genetic disorders.

The stretch of DNA which codes for a specific protein is often interrupted by sections of apparently useless DNA – known as introns – which need to be edited out in order to produce a new protein.


Before a transcribed gene is translated into t

During development and during pathological processes in the adult, cells are constantly changing their function. One, well-characterized, cellular transition that occurs during development, as well as during wound healing, tissue fibrosis, and tumor metastasis, is the transition from an epithelial cell to a mesenchymal cell (often a fibroblast).

This change in cell type and function is known as epithelial-mesenchymal transition (EMT) and it has been shown that a protein known as FSP1 is important for this transition.

Debate over euthanasia continues in many countries. Opinions were divided for months in Italy over the case of Piergiorgio Welby, who died Dec. 20 when he was administered a sedative and his artificial respiration was turned off.

More recently, in Australia, cancer sufferer John Elliot traveled to Zurich, Switzerland, to put an end to his life with the aid of the organization Dignitas. As often happens with these cases, pro-euthanasia activists exploited the emotional appeal of a suffering and terminally ill patient to push for a so-called right to die.

Elliot was accompanied in his journey by Australian euthanasia advocate, Philip Nitschke, as well as a reporter from the Melbourne-based Age newspaper, the periodical reported Jan. 27.