Environmental

In recent years, polylactic acid (PLA) has attracted attention as a replacement for petroleum-based plastics. It is made from corn-starch, or other starch-rich substances like maize, sugar or wheat, and is biodegradable – reverting in less than 60 days in ideal conditions. PLA is already used as a material for compost bags, food packaging, and disposable tableware, and also for a number of biomedical applications, such as sutures, stents, dialysis media and drug delivery devices. Although its price has been falling, PLA is still more expensive than most petroleum-derived commodity plastics, but now a team of researchers has succeeded in simplifying the production of PLA and making the process much cheaper, meaning we could soon see PLA used in a much wider variety of applications. Read More

In a world where concern for the environment is high on the agenda, it was only a matter of time before the laptop got a green makeover. Outstripping even the Bamboo notebook in eco-friendly credentials, designer Je Sung Park has pushed the concept to its limit and opened our eyes to the laptop of the future: a recyclable paper design. Read More

The rainbow effect caused by varying thicknesses of oil film on water’s surface might be pretty to look at but is indicative of polluted water. This “oil sheen” proves especially difficult to remove, even when the water is aerated with ozone or filtered through sand. But now a University of Utah engineer has developed an inexpensive new method to remove oil sheen by repeatedly pressurizing and depressurizing ozone gas, creating microscopic bubbles that attack the oil so it can be removed by sand filters. Read More

The 658kg (1,450 lb) Soil Moisture and Ocean Salinity (SMOS) satellite launched by the European Space Agency (ESA) this week is the first ever satellite designed both to map sea surface salinity and to monitor soil moisture on a global scale. The unique radiometer it carries will enable passive surveying of the water cycle between oceans, the atmosphere and land thereby playing a key role in the monitoring of global climate change. Read More

Most cyclists would agree that the two most likely things to forget after heading out on a journey are a light and a tire pump. It would make perfect sense, then, to combine the two into one handy accessory, which is exactly what designer Kai Malte Roever has done with the “PUYL”. The bonus is that when you pump up your tires, you're also charging the LED light. Read More

Although fish numbers are in decline in oceans all around the globe, the same can’t be said for their robotic brethren. Like the “Robotuna” from MIT and the robots developed by a team at the University of Essex, the latest robotic fish from Michigan State University also take inspiration from nature. The aim is to give researchers more precise data on aquatic conditions and provide a deeper understanding of critical water supplies and habitats... and hopefully help improve the outlook for fish of the biological variety. Read More

It's been a while since we've taken a look at the weird and wonderful canvas that is Dubai's skyline of the future, and this proposal from James Law Cybertecture would slot neatly in among radical designs like the Almeisan Tower and the spiraling ZPO. Shaped like a giant disco ball, the Technosphere is conceived as a self-sustaining model of the Earth in miniature incorporating a range of active and passive systems to meet these goals. Read More

The photovoltaic (PV) panels adorning the rooftops of buildings around the world have become a visible sign of the shift towards environmentally friendly solar power. Now researchers have developed a new type of three-dimensional PV system using optical fiber that promises solar generators that are foldable, concealed and mobile, meaning they could be hidden from view and leave rooftops panel-free. Read More

If the benefit to our environment isn’t enough to get some people to recycle, Georgia Tech’s Valerie Thomas has come up with the concept of offering a cash incentive enabled by “Smart Trash”. The concept involves a scanner integrated into a trash receptacle that automatically records what is being disposed of using Universal Product Codes (UPC) or radio frequency identification (RFID) tags attached to the trash. This would not only allow recyclers to better sort the waste but could also provide a cash back channel to consumers recycling goods of value. Read More