Rachel MartinContributor, TechHive

Rachel is a recent MIT graduate with a bachelor's in materials science and engineering. She likes 3D printing, solar cells, and maybe 3D printing solar cells, as well as videos of cats being confused by Roombas.

Robotic needles bust cranial blood clots, could make brain surgery less invasive

Don’t worry, no pictures: Vanderbuilt University's robotic needles could one day make certain kinds of brain surgery far less invasive.

AquaTop display makes waves and turns your bathtub into a touchscreen

I can’t believe I just made that pun.

Watch as the MESSENGER probe looks back to Earth, bids our fair planet adieu

Here's your daily dose of relativity in one time-lapse video from NASA.

Rare earth metals might be a little less rare thanks to Japanese sea mud

“Rare earth” refers to the scarcity of easily-mined ores of the elements. Last month, we discussed a breakthrough in large-scale electrolysis that could make refining these ores and oxides much easier; now, Japan’s announcement of the discovery of a huge deposit of rare-earth minerals could make the market that much more competitive.

Here’s what Antarctica would look like without the ice

Bedmap2 produces the most detailed and accurate imaging of the Antarctic landmass yet.

Transparent solar cells could charge your devices while you play Angry Birds

Organic photovoltaic coatings gather energy without disrupting your gadget use.

Quadrotors play catch with inverted pendulum; world domination next

No, really. What else is there to say? Watch the robots play catch-the-pendulum.

Electrolysis makes titanium, other pricey metals less expensive

Titanium and tantalum, rare and expensive because they’re so hard to refine, just got a lot more accessible.

Absolute zero no longer absolute; next up, dividing by zero?

Welcome to 2013: We broke physics.

JAXA’s Space Aquarium Puts Fish Families in Orbit, Out of Reach of Kittehs

Space fishies in a self-cleaning aquatic habitat will show the impact of microgravity over generations.

3D Printing in Space: Repair Your Space Station With Tools Built in Orbit

Need a spacecraft part while in orbit? Made in Space aims to save money by fabricating wrenches and rocket nozzles out of plastic and metal... in space.

Geeky Pet Costumes Guarantee Kittehs a Good Halloween, More Scratches for Owners

Is your cat a Trekkie or a Potterhead, a Whovian or a Brony? Make your--I mean, your pet’s--allegiances known with pet costumes for all fandoms!

Artificial Photosynthesizers Render Plants Obsolete (Take That, Nature!)

Another step on the path to clean energy is made as scientists come ever closer to producing fuels from just sunlight, water, and those pesky greenhouse gases.

Lego Robot Replaces iPad 2 User for Stress Tests

Loathe to spend valuable development time manually taking 10,000 photos, researchers built a button-pusher out of Lego Mindstorm kits and a little ingenuity.

Cyborg Plants Render Humans Even More Obsolete

Researchers create plant-robot hybrids that can feed, water, and sun themselves. (I, for one, welcome our new photosynthesizing overlords.)