Tag Archives: Environment

Existing cropland could feed 4 billion more

An abundant supply of food for a hungry world, hidden in plain sight In many areas (lighter areas), crops used for non-food uses (biofuels, other) were not delivered to the food system. Credit: Emily S Cassidy et al./Environmental Research Letters Reallocating croplands away from fuels and animal feed could boost food available for people by 70 […]

XPrize After Earth challenge

The XPrize Foundation has teamed up with  Sony Pictures Entertainment and Overbrook Entertainment to launch a robotics competition celebrating the release of After Earth, in theaters May 31. In Phase 1 of the challenge, teams will create a 2–3 minute video essay that answers targeted questions and describes their thinking on the importance of space exploration, […]

Harnessing the energy of 2,000 suns

Rendering by Airlight Energy of the prototype HCPVT system under development The Swiss Commission for Technology and Innovation has awarded scientists a $2.4 million (2.25 million CHF) grant to develop an affordable photovoltaic system capable of concentrating solar radiation 2,000 times and converting 80 percent of the incoming radiation into useful energy.* The system would also provide […]

The Limits of the Earth — Part 2: Expanding the Limits

by Ramez Naam (Credit: NASA) This is part two of a two-part series on the limits of human economic growth on planet Earth.  Part one details some of the environmental and natural resource challenges we’re up against. Part two, here, looks at the ultimate size of the resource pool and solutions to our problems.  Both parts […]

IT’S TIME FOR A REAL POLICY ON ASTEROIDS

by Peter A. Garretson Edge-on view of our solar system with Sun (white) in the center, showing the population of near-Earth asteroids (NEAs) and potentially hazardous asteroids (PHAs) that scientists think are likely to exist based on the NEOWISE survey. Positions of a simulated population of PHAs on a typical day are shown in bright orange, […]

NEAR-EARTH ASTEROID 2012 DA14 TO MISS EARTH ON FEB. 15

(Credit: NASA JPL) A small asteroid named 2012 DA14 will pass inside the geosynchronous satellite ring on February 15, but the orbit will be no closer to the Earth’s surface than 3.2 Earth radii , according to NASA JPL.. Although its size is not well determined, this near-Earth asteroid is thought to be about 45 meters […]

The Top 10 Smartest Cities In North America

WRITTEN BY Boyd Cohen Which cities are pushing the envelope of technology, sustainability, and better living conditions? Some cities are adding high-tech infrastructure. Some are implementing revolutionary sustainability plans. Others are fostering innovative business and science developments. But which city combines these qualities and others to be the smartest city? A few weeks ago, Co.Exist published a ranking […]