Ashok Gadgil: The Humanitarian Inventor

His work on water purification, cookstoves, and arsenic removal has helped tens of millions of people worldwide

5 min read
Ashok Gadgil: The Humanitarian Inventor
Photo: Gabriela Hasbun

No! No! No! In Ashok Gadgil's cluttered office at the Lawrence Berkeley National Laboratory, hidden among the stacks of books and awards and whiteboards and ID badges from humanitarian organizations, you'll spot tiny pictures of former U.S. first lady Nancy Reagan. “Just Say No!," each picture implores.

Gadgil has appropriated Reagan's antidrug slogan for his own ends. “I tend to say yes too often," he says, laughing. “Saying no is valuable, because I'm interested in lots of stuff, but my time is full."

Keep reading...Show less

This article is for IEEE members only. Join IEEE to access our full archive.

Join the world’s largest professional organization devoted to engineering and applied sciences and get access to all of Spectrum’s articles, podcasts, and special reports. Learn more →

If you're already an IEEE member, please sign in to continue reading.

Membership includes:

  • Get unlimited access to IEEE Spectrum content
  • Follow your favorite topics to create a personalized feed of IEEE Spectrum content
  • Save Spectrum articles to read later
  • Network with other technology professionals
  • Establish a professional profile
  • Create a group to share and collaborate on projects
  • Discover IEEE events and activities
  • Join and participate in discussions

New AI Speeds Computer Graphics by Up to 5x

Neural rendering harnesses machine learning to paint pixels

5 min read
Four examples of Nvidia's Instant NeRF 2D-to-3D machine learning model placed side-by-side.

Nvidia Instant NeRF uses neural rendering to generate 3D visuals from 2D images.

NVIDIA

On 20 September, Nvidia’s Vice President of Applied Deep Learning, Bryan Cantanzaro, went to Twitter with a bold claim: In certain GPU-heavy games, like the classic first-person platformer Portal, seven out of eight pixels on the screen are generated by a new machine-learning algorithm. That’s enough, he said, to accelerate rendering by up to 5x.

This impressive feat is currently limited to a few dozen 3D games, but it’s a hint at the gains neural rendering will soon deliver. The technique will unlock new potential in everyday consumer electronics.

Keep Reading ↓Show less

Golf Robot Learns To Putt Like A Pro

Watch out Tiger Woods, Golfi has a mean short game

4 min read
Golf Robot Learns To Putt Like A Pro

While being able to drive the ball 300 yards might get the fans excited, a solid putting game is often what separates a golf champion from the journeymen. A robot built by German researchers is quickly becoming a master of this short game using a clever combination of classical control engineering and machine learning.

In golf tournaments, players often scout out the greens the day beforehand to think through how they are going to play their shots, says Annika Junker, a doctoral student at Paderborn University in Germany. So she and her colleagues decided to see if giving a robot similar capabilities could help it to sink a putt from anywhere on the green, without assistance from a human.

Keep Reading ↓Show less

This Gift Will Help Your Aspiring Engineer Learn Technology

Know someone that is hard to shop for? We have the perfect gift for you.

4 min read