Max, Chris, and Joey decide to test out some new custom-made blades and explain the best way to dispatch a zombie. The undead better think twice before going up against these guys!

Now that astronaut Scott Kelly is back on earth, scientists are studying how all that time altered his body.

After months of pestering, Karl finally goes to see a doctor for a prostate exam. As an added bonus, Ricky and Steve get to watch the whole thing on a video monitor.

In a spectacular discovery, a team of scientists came across a 600-mile long coral reef located at the mouth of the Amazon River, all hidden under muddy waters.

See how an asteroid collision could result in the Earth spinning closer to the sun.

Explore the possibility of communication with aliens through satellite signals.

One way the world might end: evil nano-robots.

Could all-powerful robots bring about the end of the world?

Scientists discuss the probability and implications of an alien invasion.

Could super intelligent mutants spell doom for all mankind?

Scientists demonstrate a lab-sized version of a volcanic eruption - the kind that in real life, could spell doomsday for Earth.

Another way the world could end: a freezing, barren, blustery, frigid ice age.

Will the world end in nuclear holocaust brought on by mad scientists, crazed enemies, or computer-controlled warfare?

Will the end of the world be heralded by an unstoppable deadly plague?

NASA's Juno spacecraft will orbit Jupiter for about two years before scientists destroy it. They're destroying it in order to avoid contamination on Jupiter's moon Europa, which could have life.

Jupiter is the largest planet in our solar system, and it also spins the fastest.

NASA recently captured imagery of water ice hills on Pluto ‘floating’ in a sea of frozen nitrogen and moving over time like icebergs. These nitrogen glaciers measure one to several miles across.

Scott Kelly’s mission doesn’t end when he lands back on Earth. Kelly and his twin brother will be observed for two years to see how space impacts a person’s health.

You’ll never look at a cotton candy machine the same way ever again!

NASA’s Dawn spacecraft has allowed animators to bring some of the most prominent geological structures on the dwarf planet Ceres to life. The animation shows some of its most prominent craters including Occator, and its large, conical mountains.

NASA astronaut Scott Kelly returns to Earth after spending 340 days on the International Space Station.

Thanks to the Parkes radio telescope in Australia, we can now see nearly 300 galaxies normally hidden by stars and dust, 250 million light years away.

A SpaceX Falcon 9 rocket launched on March 4th successfully deployed an SESsatellite, but failed to land properly.

UC Berkeley seismologists just released an app that can detect magnitude 5 earthquakes up to 6.2 miles away. The software differentiates real tremors from everyday motion, with 93 percent accuracy.

2016 marks the 50th anniversary of Star Trek. And to boldly go where no man has gone before, physicist Philip Lubin has outlined a way to propel spacecraft using photon propulsion instead of NASA’s current chemical propulsion.

Researchers in Belgium examined the immune systems of 670 people and found a 50% decrease in variation among couples living together compared to randomly paired individuals.

Thanks to the hyper-sensitive camera on the CFH Telescope in Hawaii, French astronomers have discovered an enormous plume of gas tailing a galaxy in the Virgo Cluster.

Mathematicians recognized the importance of Pi long before we could work the number into modern-day formulas.

The ExoMars probe, a joint project between Europe and Russia, is on its way to Mars. It's objective is to find any evidence of life on the red planet. If everything goes as planned, the probe should reach Mars by October 2016.

NASA officials just introduced the design for a supersonic passenger jet without the disruptive boom associated with supersonic flight.

Now that astronaut Scott Kelly is back on earth, scientists are studying how all that time altered his body.

NASA released a spectacular image of a large dying WR star and its blue bubble nebula. The WR star is 30,000 light-years from Earth and is at least 20 times the mass of the Sun.