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[ The following is an exact transcript of this podcast. ]

If you want to lose weight–really lose it and keep it off–look around your house. How many TV sets are there? And is there an exercise bike or any other similar equipment? The answers could predict the success of your weight loss quest, according to a report in the Annals of Behavioral Medicine. [More]

[ The following is an exact transcript of this podcast. ]

If you want to lose weight–really lose it and keep it off–look around your house. How many TV sets are there? And is there an exercise bike or any other similar equipment? The answers could predict the success of your weight loss quest, according to a report in the Annals of Behavioral Medicine. [More]

In December leaders from around the world will meet in Copenhagen to try to agree on cutting back greenhouse gas emissions for decades to come. The most effective step to implement that goal would be a massive shift away from fossil fuels to clean, renewable energy sources. If leaders can have confidence that such a transformation is possible, they might commit to an historic agreement. We think they can.

[More]

In December leaders from around the world will meet in Copenhagen to try to agree on cutting back greenhouse gas emissions for decades to come. The most effective step to implement that goal would be a massive shift away from fossil fuels to clean, renewable energy sources. If leaders can have confidence that such a transformation is possible, they might commit to an historic agreement. We think they can.

[More]

The 2009 Nobel Prize in Chemistry will be split among three researchers who, over the course of the past two decades, puzzled out–at the atomic level–the function of the ribosome in piecing together proteins. [More]

The 2009 Nobel Prize in Chemistry will be split among three researchers who, over the course of the past two decades, puzzled out–at the atomic level–the function of the ribosome in piecing together proteins. [More]

Bones often come in complex, delicate shapes, making it hard to find matching natural replacements for them in patients suffering from injuries, diseases or birth defects. Now researchers have grown bone grafts in the exact shape of a desired bone, an advance that could help provide doctors with just what they need for face , skull and other skeletal reconstructions.

Although missing bone can be replaced by titanium , "there is no better substitute for lost tissue than living tissue," bioengineer Gordana Vunjak-Novakovic at Columbia University explains. "Although titanium is better than nothing–you need something to help bear loads–real bones also have bone marrow inside that has many important metabolic functions."

Bones often come in complex, delicate shapes, making it hard to find matching natural replacements for them in patients suffering from injuries, diseases or birth defects. Now researchers have grown bone grafts in the exact shape of a desired bone, an advance that could help provide doctors with just what they need for face , skull and other skeletal reconstructions.

Although missing bone can be replaced by titanium , "there is no better substitute for lost tissue than living tissue," bioengineer Gordana Vunjak-Novakovic at Columbia University explains. "Although titanium is better than nothing–you need something to help bear loads–real bones also have bone marrow inside that has many important metabolic functions."

Obesity is a “global epidemic,” according to the World Health Organization. Two thirds of American adults and one third of school-age children are either overweight or obese (defined as extremely overweight). These proportions have been rising steeply, report the latest surveys. From 1960 to 2002 the population of overweight and obese adults increased by roughly 50 percent, and the corresponding increase for children was 300 percent. Compounding the problem, obesity rates in other countries are rapidly approaching those in the U.S.

Obesity is a “global epidemic,” according to the World Health Organization. Two thirds of American adults and one third of school-age children are either overweight or obese (defined as extremely overweight). These proportions have been rising steeply, report the latest surveys. From 1960 to 2002 the population of overweight and obese adults increased by roughly 50 percent, and the corresponding increase for children was 300 percent. Compounding the problem, obesity rates in other countries are rapidly approaching those in the U.S.

We face a real crisis in science education in America. Representative Bart Gordon of Tennessee, chair of the House Committee on Science and Technology, has warned that countries such as China and India will trample the U.S. economy in the near future without major improvements in teaching. Indeed, our schools are falling behind. In the 2006 Program for International Student Assessment (PISA)–a respected measure of achievement around the globe–the average science score of U.S. 15-year-olds dropped below that of teens in 28 out of 57 participating countries. (In math, U.S. students fared even worse, lagging behind their peers in 34 nations.)

We face a real crisis in science education in America. Representative Bart Gordon of Tennessee, chair of the House Committee on Science and Technology, has warned that countries such as China and India will trample the U.S. economy in the near future without major improvements in teaching. Indeed, our schools are falling behind. In the 2006 Program for International Student Assessment (PISA)–a respected measure of achievement around the globe–the average science score of U.S. 15-year-olds dropped below that of teens in 28 out of 57 participating countries. (In math, U.S. students fared even worse, lagging behind their peers in 34 nations.)

For decades the cell nucleus has been a black box of biology–scientists have understood little about its structure or the way it operates. But thanks in part to new visualization technologies, biologists have recently begun probing the architecture of the nucleus in real time. And they are discovering that this architecture appears to change as we age or fall ill or as our needs shift. In fact, the structure of nuclear components–chromosomes, RNA, protein complexes and other small bodies–could be as biologically important as the components themselves.

For decades the cell nucleus has been a black box of biology–scientists have understood little about its structure or the way it operates. But thanks in part to new visualization technologies, biologists have recently begun probing the architecture of the nucleus in real time. And they are discovering that this architecture appears to change as we age or fall ill or as our needs shift. In fact, the structure of nuclear components–chromosomes, RNA, protein complexes and other small bodies–could be as biologically important as the components themselves.

Aptly named for its location behind a ball field in New York City’s Central Park, Umpire Rock may offer a useful vantage point for calling balls and strikes. For scientists, however, it has served as a speed gun for calculating the trajectory and timing of an ancient glacier that once played an active role in global climate change. [More]

Aptly named for its location behind a ball field in New York City’s Central Park, Umpire Rock may offer a useful vantage point for calling balls and strikes. For scientists, however, it has served as a speed gun for calculating the trajectory and timing of an ancient glacier that once played an active role in global climate change. [More]

A near-vertical wall of water in what had been an otherwise placid sea shocked all on board the ocean liner Teutonic –including the crew–on that Sunday in February, more than a century ago. [More]

A near-vertical wall of water in what had been an otherwise placid sea shocked all on board the ocean liner Teutonic –including the crew–on that Sunday in February, more than a century ago. [More]