The HortiBot, designed by Rasmus Jorgensen and a team of Danish scientists at Aarhus University's Institute of Agricultural Engineering, spares farmhands the most tedious chore: weeding. As the bot winds through a field of crops — a camera keeps it on track, row by row — it identifies weeds based on the shape and orientation of their leaves. It can be rigged to spray or pull, farmer's choice.
Available: Prototype
hortibot.com
What was the most revolutionary gadget that you just can't live without? Browse through the nominees and make your vote
The iPhone is more than just a gadget. It's a genuine handheld computer, the first device that really deserves the name
Lev Grossman discusses the process of choosing the Best Inventions of the Year
All the details on the newest products to help you decide how to spend your money wisely
A research team at Philips has developed clothes that look good and let others know how you feel
NASA, Boeing and the U.S. Air Force are teaming up to develop a Blended-Wing Body aircraft for the military
From Leonardo DaVinci to the YouTube gurus, read about how these inventors changed our lives
Scientists in Hong Kong have discovered there's a better way to build a bra. How will the lingerie industry respond? An open letter to the one man who can help
Asian Film Fireworks for the Fourth
Ask Your Questions: The New York Times' Bill Keller
Cartoons of the Week
Photos: The Real-Life John Dillinger
Inside Michael Jackson's Neverland Ranch
Canada Spends Big to Save GM, So Why Not Mexico?
Photos: U.S. Marines Open a New Offensive in Afghanistan
The Incredible Shrinking Sheep of Scotland
In Peru Sports, Men Bumble, And Women Shine
Afterbirth: It's What's For Dinner