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Testosterone is linked to aggression, competition and social status. Now scientists have found that the hormone also reduces naive individuals’ confidence in others.

The WISE telescope captures nebulae that look surprisingly like hearts, both the human and valentine kind.

The Blu-ray–DVD release of The Road lands Tuesday, and Wired has an exclusive clip from the extras on the disc. Actors and filmmakers reveal how they approached translating the apocalyptic story from book to film.

Nokia and Yahoo announce they will work together on cellphone services. Oddly, despite being market leaders in many ways, the announcement feels just dated.

Boxee, a startup dedicated to getting internet video onto your TV, suddenly faces a giant competitor after the announcement of Google TV. Will the new service kill off Boxee, or could it give it a bump?

Wired.com checks out ArcAttack's musical Tesla-coil performance at Maker Faire 2010.

The Air Force gets a whole lot closer to a hypersonic cruise missile — part of a large program to instantly whack targets anywhere on the planet.

If you’re like me, Sunday night’s Lost series finale may not have exactly hit the spot. Sure, everyone’s dead — and some might say not a moment too soon. But aside from the possibility of Ben Linus still being up to something, a lot seemed missing. Write that last page for us -- and every other Lost fan who who's also thinking "if only ..."

A young woman files suit against her former high school and the county for damages for a situation in January 2009 when officials seized and searched her phone for explicit images.

Apple announces Steve Jobs will host its WWDC keynote on June 7. Over the weekend, Jobs e-mailed another customer saying Apple fans would not be disappointed by the conference.

Steve Holcomb powered the U.S. to its first bobsledding gold medal in 62 years at the Vancouver Games. The Olympian is a PC through and through. He trains using an Xbox and is a Microsoft Certified Professional, now setting his sights on getting his Windows 7 certification.

After six seasons of riveting weirdness — smoke monsters! wormholes! tropical polar bears! — Lost comes to a close.

International iPad users don't have the luxury of AT&T's flexible, pay-as-you-go data plan offered in the United States -- but they can roll their own data plans, with a little hacking.

Upgraded power grid could help consumers reduce energy use and give utilities ability to better manage power generation and demand.

A drug-resistant germ that infected over 700 troops may have met its match in a novel technique that kills entire bacterial colonies within hours.

Wired.com readers choose the, frankly, the crappiest of the crappy cars owned by Wired.com readers.

Facebook CEO Mark Zuckerberg addresses the furor over Facebook's recent moves in a new Op-Ed, but gives little ground to his critics. It's a familiar story, but will it play out as well for Facebook as it has in the past?

Product: Boulder Dash Manufacturer: Roundup:Wired Rating: 0 #item_stats {display: none;} #item_specs {display: none;}

With high-torque electric motors, low gear ratios, and wildly articulating suspensions, radio-controlled rock crawlers venture where no toys have gone before.

1. RC4WD Killer Krawler
This 1/5-scale truck should be called the Overkill Krawler. Its CNC-milled aluminum chassis provides 5 inches of ground clearance and a rigid frame to support its contortionist suspension, dual electric motors, and twin computerized speed controls. Weighted pendulums inside the wheels boost traction by keeping pressure on the rocks below. But you need serious skill to make this beast behave; reprogramming your brain to steer front and rear wheels is tricky.

WIRED So well engineered and built it could be drafted into military service. When you're not duking it out with rocks, mount this machined beauty on the wall—it's that gorgeous.

TIRED All that pretty metal jacks up the weight, which weighs down battery life. Krazy expensive.

$1,500, rc4wdstore.com

2. Losi Night Crawler
To tackle jagged rocks and steep slopes, you think ahead and go slow. That means you may have to park in a precarious spot while you sort out your strategy. The 1/10-scale Night Crawler encourages this strategic approach with a worm-gear drive that can apply just enough torque to hold the truck steady. Once you've chosen a path, the 45-degree steering angle and 4-inch aluminum shocks let you take the route you want, not just the path of least resistance.

WIRED Accepts powerful, long-lasting lithium polymer cells for extended missions. Or you can keep it cheap and go with standard NiMHs.

TIRED LED lights, intended to help you crawl around at night (hence the name), aren't quite bright enough to make that possible. Worse, they only point downward.

$500, losi.com

3. Axial SCX10 TR
Realism runs high in Axial's 1/10-scale Trail Ready crawler: Its tunable suspension, solid rear axle, and bead-lock wheels—which cinch the tires onto the rims so they don't slip while you're grinding up a steep rock face—faithfully replicate a real-life crawler. And its smoother tires and less extreme gear ratios help you squeeze more meters out of each battery charge. Just don't go trying to scale the woodpile.

WIRED When the sun drops below the horizon, LED headlights brightly illuminate the trail ahead of you. It's also faster on flat surfaces than the rest of this convoy.

TIRED Doesn't scoff at gravity like the Krawler or the, uh, Crawler. Abundance of plastic components might add up to dubious durability—even in miniature, this sport is brutal.

$299, axialracing.com

4. Traxxas Summit
The Summit's waterproof electronics open up oceans of new challenges: Rocky streams and snowy slopes will no longer be off-limits for fear of damaging your $500 toy. But the fan-cooled motor drinks a lot of juice—two sets of seven-cell NiMHs. On the plus side, that amplitude of amps, combined with a smart transmission, lets this 1/10-scale truck wear two hats: deft climber one minute and flat-out trail runner the next.

WIRED Transitions from high-speed bashing to methodical ascents at the flick of a switch. (Well, two switches, actually: One changes your gearing and the other locks or unlocks your differentials.)

TIRED Plastic wheels have fake bead-locks—a deadly sin to purists. Suspension articulation not on a par with the other crawlers here.

$569, traxxas.com

Product: Lamborghini Gallardo LP560-4 Polizia Manufacturer: LegoWired Rating: 0

If only the two Lamborghini Gallardos owned by the Italian State Police were made of Legos. Sigh. Then it wouldn't have been a big deal when a cop disassembled one in a smackdown with a car pulling out of a gas station. Fortunatamente, you can reenact this scene over and over again with the 1/17-scale Lego Lamborghini Gallardo LP560-4 Polizia. What this Lego-ghini lacks in horsepower it makes up for in detail -- 801 pieces of it. Starting with a miniature replica of the Gallardo's 5.2-liter V-10 engine, it has everything you need to play polizia, including a radio, a radar gun, and a cooler for high-speed donor-organ deliveries. There's even an onboard defibrillator, presumably for restarting the tickers of bad guys who get cardiac-arrested when the 5-0 appears behind them in a $225,000 road rocket.

Product: Face Savers Manufacturer: Roundup:Wired Rating: 0 #item_stats {display: none;} #item_specs {display: none;}

Strapping on a Bluetooth headset doesn't have to mean casting off dignity. We put 4 to the test to find which skew more cool than tool (you know, relatively speaking).

1. Aliph Jawbone Icon
Headsets don't have to be hideous. Just ask Yves Béhar, whose handsome design for the original Jawbone has been further refined in the Icon. It sounds great, too: Noise filters eliminate virtually all external racket—wind, gunfire, loquacious hobos. The folks at Aliph are also apparently BFFs with Apple; a separate battery indicator for the headset appears onscreen when you pair an Icon with an iPhone.

WIRED Syncing requires zero thinking. Got a BlackBerry and a Nexus One? Icon can be paired with both simultaneously. Four solid days of battery life. Fits perfectly in ear despite lack of pinna-anchoring loops.

TIRED Sticky rubber earpiece gets dirtier than ODB's debut album.

$100, jawbone.com

2. Plantronics Explorer 395
Plantronics has serious geek cred. Neil Armstrong wore one of its headsets during the 1969 moon landing. Too bad the Explorer 395 has all the visual panache of the crew in Mission Control—you know, short-sleeved shirts, black glasses, and pocket protectors. But solid audio quality makes up for the weak design. In addition to the usual digital tricks, Plantronics' engineers created a specially shaped mic port to mask outside noise. It picks up voices perfectly while ignoring anything short of a hurricane-force gust.

WIRED More lightweight than Heidi Montag's summer reading list. The price is right, Bob.

TIRED Houston, we have a fashion problem—makes you look like a pre-bubble I-banker.

$50, plantronics.com

3. Motorola Endeavor HX1
This whopping, tanklike hunk of plastic requires Paganini-level fiddling to position correctly in your ear. But once inserted, it operates like a sonic sponge, soaking up every sound within 40 yards. It offers some cool features, too. Passing on trade secrets at work? Just hit a button to activate stealth mode, which captures vocal vibrations and translates whispers into (somewhat garbled) speech.

WIRED Stealth mode makes you slightly less annoying on public transit. Low on juice? The HX1 gently chirps a reminder in your ear.

TIRED Flimsy ear loop barely supports the headset's bulk. Burns through battery life: Even Emperor Palpatine didn't have this much appetite for power.

$130, motorola.com

4. Jabra Stone
Most Bluetooth headsets are Frankenstein monstrosities of rubber and plastic. Not the Stone. This little shaving of sheer elegance has no moving parts and nestles into your auditory canal rather than violating your ear. But awesome design is where the good stuff ends. The Stone choked on nearly every task we set for it. Syncing stinks, battery life is anemic, and audio is as mellifluous as a blender filled with tenpenny nails.

WIRED Superb packaging. Egg-shaped charging base is as pretty as the headset.

TIRED Most of the outward-facing side of the Stone is one big End Call button. Press it by accident and you'll cease transmission. No charging port on headset—you have to plug into the base station to juice up.

$130, jabrastone.com