Magnetic resonance imaging (MRI) showed in a study presented at the 2007 annual meeting of the American Society of Clinical Oncology to be better at detecting ductal carcinoma in situ (DCIS) than mammograms. MRI's were also shown to be very good at detecting high grade DCIS.

Women are recommended by the American Cancer Society to get an annual mammogram after the age of 40, do clinical breast exams starting in your 20's and if you are in a high risk group to receive annual screening with a breast MRI.

In a study among almost 6,000 women who were screened with both MRI and mammography, MRI detected 92 percent of DCIS cases where mammography only detected 56 percent of cases diagnosed.

Those venturing into space face a very serious occupational hazard -- cancer. The disease can be caused by radiation from the cosmic rays and solar flares astronauts encounter when they travel beyond the Earth's protective magnetic layer or magnetosphere.

British scientists are working on rectifying this problem by creating a Star Trek-style deflector shield to protect astronauts from radiation.

Think about this:

Scientists wish to mimic the magnetic field that protects the Earth with shields deployed around spacecraft and on the surfaces of planets to deflect harmful energetic particles.

Details, presented at the Royal Astronomical Society's National Astronomy Meeting in Preston, UK, include the following:

• The idea has been linked to the deflector shields that protect the USS Enterprise and other spacecraft on Star Trek. The shields, like on the TV show, could be switched on and off.

• In order to make the shield, scientists must generate a magnetic field and then fill it with ionized gas, or plasma. As energetic particles interact with the plasma, energy is sapped away from them, causing them to slow down.

• Protective shelters would not work on long-duration space journeys due to the drip of energized particles, thought to be as harmful as large solar storms.

"The nice thing is that magnet technology is really quite evolved here on Earth," says Dr. Mike Hapgood, from the Didcot-based research centre. The question is can you take it into space?"

A team from Rutherford-Appleton plans to build an artificial magnetosphere in the laboratory. They would eventually like to fly a test satellite which would test the technology in space.

On day three of the race now, friends Mike Dann, Simon Edmundson and Tim Tottenham, known as the ATP team, are into the 350 mile trek across the frozen Artic to the Magnetic North Pole as one of 15 teams taking part in the Sony Polar Challenge North Pole race. Temperatures can get to a frigid -50C. To add to the danger and drama, 80 percent of the world's Polar Bear population live there. Considered one of the world's toughest endurance tests, the teams are expected to reach the destination on April 27. Having just crossed Polar Bear Pass, ATP is one of five leading teams. If you are into extreme sports, and unique adventures, the Polar Challenge teams are keeping daily diaries online, as well as an overall summary of the day's events during the race. They provide an excellent photo gallery, live video and a map. The images are spectacular. The ATP team is raising funds for the Laura Crane Trust.

The Laura Crane Trust was founded in memory of Laura Crane, who died just two weeks after her seventeenth birthday from a complex mix of four types of cancer. The foundation serves teens and young adults living with cancer.