Ptable is a free interactive periodic table of elements. It links Wikipedia articles about the element, let’s you group them by non metals and metals, shows you what state an element is in when the temperature changes, and you can tick on/off information to test if you can guess the table without names, number of electrons, and isotopes…check it out!
Science Friday Video Pick of the Week: Boost Your Bike:
Maxwell von Stein, a 22-year-old graduate of The Cooper Union, built bicycle that uses a flywheel to store energy. Instead of braking, Max can transfer energy from the wheel to the flywheel, which spins between the crossbars. The flywheel stores the kinetic energy until Max wants a boost, then he can transfer the energy back to the wheel using a shifter on the handlebars.
Bike schemes are becoming increasingly popular in cities around the world, with more than 360 already running, but their main aim is usually to ease congestion rather than boost health.
Researchers at the Center for Research in Environmental Epidemiology in Barcelona found in a study, however, that around 9,000 tons of carbon dioxide pollution are averted and some 12 lives saved each year by Barcelona’s scheme, which was introduced in March 2007.“Active transport policies such as bike sharing systems promote physical activity among the population and are a good means to improve public health and also reduce expenses in public health services,” said David Rojas-Rueda, whose study was published in the British Medical Journal.
…The World Health Organization (WHO) recommends adults should do at least 150 minutes of moderate exercise a week and says this could be done by walking for 30 minutes five times per week, or by cycling to work every day.
The researchers said this initial assessment suggested it was important “to encourage cities to change car use by cycling and stimulate the implementation of bike sharing systems in cities to improve the health of the population.”
Check out the rest of the article, including details about London and Barcelona’s bike share systems, here. For an overview of the rapid growth of bike sharing programs around the world take a look at National Geographic’s recent article, ‘Bike share Schemes Shift Into High Gear’. Ride on!
(Photo credit: Inhabitat)
National Geographic releases Trail Maps, ambitious new backcountry navigation app for iPhone and iPad, featuring high-resolution USGS topographic maps for the lower 48 states and GPS functionality
Wow! Kind of makes me wish I had an iPhone…
Sure, stem-cell research has had something of a controversial past, but a new revolutionary skin gun has the ability to spray away a burn victim’s unsightly injury.
The medical device, is currently just a prototype, but it has already been used to help a small number of burn-victims.