LED lighting

After two years of repositioning one of the largest corporations in the world, General Electric CEO Jeff Immelt said that the company is "back on offense."

December 16, 2010 8:24am | By Andrew Nusca

Although the retailer has been giving away 5 percent of its profits for the community good since 1946, this is the first time it has set formal environmental goals.

2 | December 13, 2010 5:22am | By Heather Clancy

Researchers at the University of California at Berkeley show of their quadrotor helicopter and give SmartPlanet an exclusive look at what it takes to hack Microsoft's Kinect.

6 | December 7, 2010 12:21am | By Boonsri Dickinson

The key is doing different things each day.

4 | November 24, 2010 7:30am | By Dana Blankenhorn

Guided by 3-D imagery, femtosecond lasers can slice up a cloudy lens with more precision and fewer nicks and tears.

3 | November 17, 2010 11:23pm | By Janet Fang

A new type of light can kill superbugs in the air and on exposed surfaces. Experts expect the light technology to help ease up hospital infections.

21 | November 15, 2010 8:29am | By Boonsri Dickinson

Sleek, solar-powered stations accommodating more than 1,000 bikes have arrived in the nation's capital. D.C. introduces its $5 million bike share program, modeled after Montreal's.

8 | November 15, 2010 2:00am | By Melanie D.G. Kaplan

Italy integrates power generation and transportation on the A18 with a large road project in sunny Sicily.

1 | November 12, 2010 7:15am | By Melissa Mahony

Turns out many of the advances happening in production technology could have very real environmental and energy efficient benefits.

November 11, 2010 12:52pm | By Heather Clancy

By changing the properties of conventional semiconductor wafers, engineers have opened the door to such devices as light-emitting diodes on a suture thread and even implantable biomedical tattoos.

5 | November 11, 2010 4:00am | By Christina Hernandez

A massive contrail off the coast of California is certainly unusual, but a look back at a similar scare points to jet contrails, not rocket smoke.

26 | November 9, 2010 11:55am | By John Herrman

Municipal and state governments also demonstrate strong leadership, according to latest EPA Green Power Top 50 ranking.

November 2, 2010 4:14am | By Heather Clancy

LED lighting firm Cree added color rendering index options to its XLamp line of LED bulbs, bringing improved color accuracy to energy-efficient bulbs.

November 1, 2010 7:53am | By Andrew Nusca

Investing in solar or wind is like printing money, according to Pro-tech Energy Solutions principal John Drexinger. I spoke with him about bringing New Jersey on-board with renewables.

2 | October 26, 2010 8:28am | By Andrew Nusca

The solid-state age is upon us: GE and University of Maryland researchers have demonstrated an LED light bulb that's smaller, lighter and brighter -- thanks to jet engine cooling technology.

5 | October 21, 2010 11:40am | By Andrew Nusca

France, Britain and Germany are at odds with each other over the future of rail travel between their respective nations.

3 | October 19, 2010 12:45pm | By Andrew Nusca

A proposed installation outside of Abu Dhabi would harness the power of more than a thousand blade-less, waving stalks.

6 | October 15, 2010 3:00pm | By John Herrman

It's a system so inconsistent and disorderly that an attack against the national--or even a regional--power grid may be technologically impossible.

6 | October 14, 2010 2:30pm | By John Herrman

Transportation topped smart grid and biofuels in cleantech investment in the third quarter of 2010, according to a new report. Here's a breakdown of the numbers.

October 4, 2010 6:51am | By Andrew Nusca

While refining their approach to crafting nanowires, NIST chemists stumbled across a way to make them produce light just like an LED bulb.

1 | September 30, 2010 7:12am | By Andrew Nusca