While smokers are the primary addictive personality it remains okay to demonize, obesity is not far behind. 

And if smokers tried to quit before and gained weight, they are less likely to try again, according to scholars at Penn State College of Medicine. 

Weight gain is a predictable occurrence for smokers who have recently quit. Within the first year after quitting, people  gain from eight to 14 pounds on average. Some smokers report that they keep smoking simply because they do not want to gain weight from quitting. 

In the 1950s and 1960s, pregnant women with morning sickness were often prescribed thalidomide. Shortly after the medicine was released on the market, a reported 10,000 infants were born with an extreme form of the rare congenital phocomelia syndrome, which caused death in 50 percent of cases and severe physical and mental disabilities in others.

Although various factors are now known to cause phocomelia, the prominent roots of the disease can be found in the use of the drug thalidomide.  It ignited the anti-pharmaceutical cultural firestorm that still burns today.

Rapidly aging mice fed an experimental drug lived more than four times longer than a control group, and their lungs and vascular system were protected from accelerated aging, according to a new study.

The reason is a protein's key role in cell and physiological aging. The experimental drug inhibits the protein's effect and prolonged the lifespan in a mouse model of accelerated aging. 

This is a completely different target and different drug than anything else being investigated for potential effects in prolonging life and the experimental drug is in the early stages of testing, they note in Proceedings of the National Academy of Sciences.

Aquatic algae can sense and adapt to changing light conditions in lakes and oceans, making them able to use a wide range of color, according to a new paper.

Phytochromes are the eyes of a plant, allowing it to detect changes in the color, intensity, and quality of light so that the plant can react and adapt. Typically about 20 percent of a plant's genes are regulated by phytochromes and the phytochromes use bilin pigments that are structurally related to chlorophyll, the molecule that plants use to harvest light and use it to turn carbon dioxide and water into food.

In a Twitter age, one where mainstream media desperately needs to keep people watching and reading, every event is magnified. A tropical storm that hit New York City was transformed into a Superstorm and a drought in the West is a harbinger of global warming that will crack the planet.

Star Wars Day is May 4th so you are probably wondering how you would build deflector shields in case the US government is worried about turtles on its former nuclear testing grounds and thinks your cows will harm the ecosystem and sends a Death Star after you.

You're in luck; not only are they scientifically feasible, the principle behind them is already used here on Earth.

If you're too young to have seen the original, and missed the flawed prequels, you needn't feel left out - in almost every science-fiction scenario, spaceships are protected by a shield defense system that deflects enemy laser fire. 

One of the most powerful events in our universe – Gamma-Ray Bursts (GRB) – behave differently than previously thought, and this evidence from observation of a GRB rules out most of the existing hypothetical predictions concerning the afterglow of the explosions.

Parents are always worried about their special snowflakes - unless a phone call needs to be  made. Then, parents are no less likely to engage in cell phone and other distracting behavior than the general public, according to a new paper in Academic Pediatrics.

The use of lamps that emit UV radiation in nail salons has raised some concern about the risk of cancer, but previous studies have lacked a large enough sampling of lights from a variety of salons.

To create a more authoritative sample, the authors of a new study tested 17 light units from 16 salons with a wide range of bulbs, wattage and irradiance emitted by each device for their research letter.

Higher-wattage light sources were correlated with higher UV-A irradiance emitted.

University of California, Berkeley, geologist William Dietrich pioneered the application of airborne LIDAR, light detection and ranging, to map mountainous terrain, stripping away the vegetation to see the underlying ground surface - but he still couldn't see what was under the surface: the depth of the soil, the underlying weathered rock and the deep bedrock.

He and geology graduate student Daniella Rempe have now proposed a method to determine these underground details without drilling, potentially providing a more precise way to predict water runoff, the moisture available to plants, landslides and how these will respond to climate change.