Some beers might help with bone density due to the inclusion of silicon within the brew. Of course, the study points out the benefits of beer drinking but that the drinking needs to happen in moderation. Getting drunk from beer doesn’t make you stronger, it just makes you feel stronger.

Beer is a rich source of a nutrient that can help prevent weak bones – but it depends what type you drink, claim researchers at University of California, Davis, today.

As one of the nation’s favourite tipples, beer is a rich source of dietary silicon, which can help cut the chance of developing diseases like osteoporosis, they conclude.

However, not all beers are the same, with those containing malted barley and hops having higher silicon content than beers made from wheat.

Some light lagers made from grains like corn have the lowest levels of silicon while beers made from hops seem to come out on top, according to the study. The research, published in the Journal of the Science of Food and Agriculture, examined 100 commercial beers and their production methods.

The experts said beer was a major source of dietary silicon – roughly half of the silicon in beer can be readily absorbed by the body.

Keep reading at The Guardian.

Here’s a chance for some people to help rebuild Haiti from afar. Good Magazine has launched a competition for idea on how to sustainably rebuild Haiti.

In the wake of the Port-au-Prince earthquake, Haitians have sustained an immense loss of life, with numbers still climbing, and the collapse of physical structures signifying the collapse of the governmental, social, economic, and infrastructural institutions those structures housed and represented. Many of those institutions and infrastructures were weak before the quake, as Haiti is among the world’s poorest nations, reliant on international aid and subject to severe economic disparity.

This earthquake was no typical disaster, and Haiti is no typical disaster-struck region. In many ways, Port-au-Prince and its institutions required rebuilding before the buildings collapsed. The relief effort of this particular disaster goes beyond air-dropping supplies and building emergency housing. Haiti also requires an emergency economic system (the banks and tax office have collapsed), an emergency medical system (hospitals have collapsed), an emergency justice system (courthouses and the federal prison have collapsed), emergency education (schools have collapsed), and an emergency government (the parliament and many ministry buildings have collapsed). People talk about emergency shelter. What about emergency institutions, only one of which is housing?

Participants in February’s Spontaneous Architecture competition are invited to take this question seriously, enacting a response onto the site included below. The site includes multiple institutions and social, economic, and governmental infrastructures as well as residential areas and open space parks currently being used as campsites for those in need of housing. Participants are asked to consider one or all of the institutions present and can operate on the entire site or a specific portion thereof. Responses can be strategic, organizational, institutional, and/or architectural.

Enter the competition here>

A computer simulation of the urban environment has proven that in theory white paint on rooftops can significantly cool cities – thus saving energy in the summer that would be used for air conditioning.

Cities are particularly vulnerable to climate change because they are warmer than outlying rural areas. Asphalt roads, tar roofs, and other artificial surfaces absorb heat from the Sun, creating an urban heat island effect that can raise temperatures on average by 2-5 degrees Fahrenheit (about 1-3 degrees Celsius) or more compared to rural areas. White roofs would reflect some of that heat back into space and cool temperatures, much as wearing a white shirt on a sunny day can be cooler than wearing a dark shirt.
The study team used a newly developed computer model to simulate the amount of solar radiation that is absorbed or reflected by urban surfaces. The model simulations, which provide scientists with an idealized view of different types of cities around the world, indicate that, if every roof were entirely painted white, the urban heat island effect could be reduced by 33 percent. This would cool the world’s cities by an average of about 0.7 degrees F, with the cooling influence particularly pronounced during the day, especially in summer.

Read the rest of the article.

When most people think of China and energy coal generally comes to mind, indeed China is the world’s biggest user of coal for energy. That may not change anytime soon but what the Chinese government is doing now is expanding their renewable power and becoming the world’s largest exporter of renewable technology. We can all benefit from increased use of renewable energy even if it just offsets new coal power plants from being built.

China has also leapfrogged the West in the last two years to emerge as the world’s largest manufacturer of solar panels. And the country is pushing equally hard to build nuclear reactors and the most efficient types of coal power plants.

These efforts to dominate renewable energy technologies raise the prospect that the West may someday trade its dependence on oil from the Mideast for a reliance on solar panels, wind turbines and other gear manufactured in China.
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China’s top leaders are intensely focused on energy policy: on Wednesday, the government announced the creation of a National Energy Commission composed of cabinet ministers as a “superministry” led by Prime Minister Wen Jiabao himself.

Regulators have set mandates for power generation companies to use more renewable energy. Generous subsidies for consumers to install their own solar panels or solar water heaters have produced flurries of activity on rooftops across China.

When it comes to running it’s not the shoes that count, it’s the muscles. Some researchers have examined barefoot runners compared to shoe runners and found out that barefoot runners don’t strike their heels like those who shoes. Running barefoot is fun and healthy!

“People who don’t wear shoes when they run have an astonishingly different strike,” says Daniel E. Lieberman, professor of human evolutionary biology at Harvard University and co-author of a paper appearing this week in the journal Nature. “By landing on the middle or front of the foot, barefoot runners have almost no impact collision, much less than most shod runners generate when they heel-strike. Most people today think barefoot running is dangerous and hurts, but actually you can run barefoot on the world’s hardest surfaces without the slightest discomfort and pain. All you need is a few calluses to avoid roughing up the skin of the foot. Further, it might be less injurious than the way some people run in shoes.”
Working with populations of runners in the United States and Kenya, Lieberman and his colleagues at Harvard, the University of Glasgow, and Moi University looked at the running gaits of three groups: those who had always run barefoot, those who had always worn shoes, and those who had converted to barefoot running from shod running. The researchers found a striking pattern.

Keep reading at Science Daily.