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It is rather odd how often I hear the expression paradigm shift during contemporary scientific presentations and seminars. The expression was popularized by Thomas Kuhn s book The Structure of Scientific Revolutions .

In the mid 1990’s, Apple Computers was a dying company.

Six images of the mini-jets taken by Cassini between 2005 and 2008. Credit: NASA/JPL-Caltech/SSI/QMUL Objects half a mile in diameter have been spotted punching through Saturn’s outermost ring, the F ring, and leaving glittering trails as they drag icy particles behind them. Scientists are calling these trails mini-jets.

Physicists have discovered a possible solution to a mystery that has long baffled researchers working to harness fusion. If confirmed by experiment, the finding could help scientists eliminate a major impediment to the development of fusion as a clean and abundant source of energy for producing electric power.

Real-time, 3-D microscopic tissue imaging could be a revolution for medical fields such as cancer diagnosis, minimally invasive surgery and ophthalmology.

One of the courses I teach regularly at my university is “Ethics in Science,” a course that explores (among other things) what’s involved in being a good scientist in one’s interactions with the phenomena about which one is building knowledge, in one’s interactions with other scientists, and in one’s interactions with the rest of the world.

By Natasha Gilbert of Nature magazine Governments from more than 90 countries have agreed to establish an independent panel of scientists to assess the very latest research on the state of the planet's fragile ecosystems. [More]

By Ewen Callaway of Nature magazine Bloodsucking leeches are offering the best hope of finding one of the world's rarest animals. [More]

It’s easy to to be impressed when you walk the halls of museums by the quality and quantity of specimens on display, but it is only a fraction of what institutions like the Academy of Natural Sciences of Drexel University and other comparable institutions have in their collections. This year, the Academy celebrates its 200th anniversary and to mark the occasion, has created a year-long exhibit titled The Academy at 200: The Nature of Discovery

Whether surgeons slice with a traditional scalpel or cut away with a surgical laser, most medical operations end up removing some healthy tissue, along with the bad. This means that for delicate areas like the brain, throat, and digestive tract, physicians and patients have to balance the benefits of treatment against possible collateral damage.

A galaxy cluster with the distribution of dark matter marked by purple overlay. Credit: NASA, ESA, E. Julio (JPL/LAM), P.

Charter BANYAN this summer and enjoy an amazing saving of 33%, valid for charters in South Florida and cruising in the Florida Keys and Bahamas, she sleeps up to 6 guests in 3 cabins.

Charter BLUE PASSION during 2012 and enjoy the new special prices aboard this luxury sailing yacht, now only $12,500 for 2 people, $13,000 for 4 people, $13,500 for 6 people and $14,000 for 8 passengers. Plus on top of that up to 2 children under the age of 10 go for free!!! Valid for charters around any of the Caribbean islands......Grenadines, BVIs, St. Maarten/St.

Charter PASSION during 2012 and save up to USD 70,000 on a weeks charter, this is a great luxury motor yacht accommodating up to 12 guests in 6 cabins. Rates now only USD 195,000 + expenses during low season, and USD 225,000 + expenses during high season.

Image courtesy of iStockphoto/adventtr More than 382,000 people with kidney disease in the U.S. are on dialysis, a painful procedure that can wreak havoc on blood vessels due to constant jabs from large needles. During dialysis, a patient’s blood is filtered out of their body and through a machine that performs the work normally done by the kidneys.