How Do Testicles Know When To Stop Making More Sperm?

Every time someone ejaculates, it produces millions of sperm. But the average pair of testicles produces billions of sperm cells over an entire lifetime. Why don’t they create all of their sperm in one go? Answer: Because testicles have a complicated process to avoid running out of sperm and endangering future… » 5/04/15 4:06pm 50 minutes ago

Is This Proof That The US Air Force Can Aerially Refuel Stealth Drones?

The RQ-170 Sentinel went from “Beast of Kandahar” enigma to Bin Laden-catching fame to crashing into Iranian hands, all in about half a decade. Since then, there have been few photos and little official talk as to its existence. Yet these pictures may prove that the RQ-170, or an enhanced version of it, is capable of… » 5/04/15 4:02pm 54 minutes ago

What's the Best Window A/C Unit?

Things are about to heat up... in our comments section. This week we’re looking for the best window A/C unit so you’ll have plenty of time to prepare, compare, and install. Which air conditioner deserves to take up your window space? Tell us in the comments. » 5/04/15 3:15pm Today 3:15pm

Smashing an $800 Lego Super Star Destroyer in slo-mo is heart breaking

For May the Fourth the folks at Wired decided to recreate one of the final scenes in Return of the Jedi where Vader’s Super Star Destroyer crashes head first into the Death Star and explodes. Except that instead of using a CG simulation, or even a movie-caliber model, they simply dropped the hard-to-find $800 Lego… » 5/04/15 2:11pm Today 2:11pm

Behold the Stupidest Government Report EVER

The drought in America is historic, affecting more than 30 percent of the United States and 37 percent of the lower 48 states. My friend, John Fleck , who used to write about nukes at the Albuquerque Journal, is the doyen of all things water in the west, and when we met last year in New Mexico, he put the fear of God… » 5/04/15 2:11pm Today 2:11pm

Machines Sensed the Nepal Earthquake from 8,000 Miles Away

When a massive earthquake struck Nepal on April 25, it created seismic waves that traveled around the world in a matter of minutes, propagating swiftly through Earth’s crust and mantle to rattle seismic stations in the US. The Nepal quake was devastating, but the fact that it was felt 8,000 miles away is actually not… » 5/04/15 1:15pm Today 1:15pm

Today's Best Deals: Roku Stick, Bluetooth Speakers, Fitbit, and More

Here are the best of today’s deals. Get every great deal every day on Kinja Deals, follow us on Facebook and Twitter to never miss a deal, join us on Kinja Gear to read about great products, and on Kinja Co-Op to help us find the best. » 5/04/15 1:15pm Today 1:15pm

Why Scientific American's Predictions from 10 Years Ago Were So Wrong

Recently, we did an experiment: We took an outdated issue of a respected popular science magazine, Scientific American, and researched exactly what happened to the highly-touted breakthroughs of the era that would supposedly change everything. What we discovered is just how terrible we are at predicting the long arc… » 5/04/15 12:40pm Today 12:40pm

Get 20% Off MeUndies, The Most Comfortable Underwear + Free Shipping

On average, men keep the same pair of underwear for seven years. That’s a long time, but not exactly surprising when you consider how easy it is to continually put off underwear shopping. Enter MeUndies - they deliver premium underwear straight to your door. Get 20% off your first order with MeUndies, the… » 5/01/15 3:26pm Friday 3:26pm

Get 67% Off DreamHost SSD Hosting and a Domain Name ($2.95 a Month)

DreamHost is offering Gizmodo readers a year of SSD web hosting and a domain name for just $2.95 a month, 67% off the regular price. Build the site you've always dreamed of from the ground up and get all the key features you need to keep it running efficiently, all for only $35 annually. Use promo code gizmodo295. » 5/01/15 4:10pm Friday 4:10pm

Save Over $100 On This Retro Style Bluetooth Speaker

Looking for a bluetooth speaker with a little class? Not only does the Veho M6 feature spectacular sound, it comes in a distinctly retro style complete with brushed aluminum and a vintage leather strap. It usually runs for $180, but Gizmodo readers can save 66% with code VEHO5. » 5/01/15 4:30pm Friday 4:30pm