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You've heard all about solar cells, but what about bacterial solar cells?

On the desk of Seokheun "Sean" Choi sits a 3x3 array that at first glance looks like a lemon squeezer. It is, in fact, a solar panel but not like any you've seen or heard about before. Instead of using semiconductors like silicon crystals to convert sunlight into electricity, the array employs a complex system that nurtures cyanobacteria -- beings whose metabolism create free electrons which can be harnessed.

Beautiful symmetry -- 3D reconstructions of viruses

Designer/molecular biologist Eleanor Lutz is back with yet another awesome science feature: virus trading cards.

The brain on LSD is like that of a baby: brain area connections become one

It took a while, but scientists have finally imaged the brains of people on LSD -- a psychedelic used recreationally by millions, but whose therapeutic potential is only recently beginning to be recognized. Judging from the scans, it seems like Lysergic acid diethylamide (LSD) "completes the brain". Essentially, the brain functions less like a compartmentalized entity and more like a whole, very much akin to how the brain of an infant works.

A desk-sized turbine can power 10,000 homes

Fresh from the GE Global Research lab is this tiny monster: a turbine small enough you can hold in your hands, but powerful enough to provide energy to a whole town. It's secret lies in a couple of design features, but also the power agent. Instead of steam, the "minirotor" as it's been nicknamed is driven by supercritical carbon dioxide.

Tree of life expanded to match reality: two third of all diversity is bacterial

Most of the life we see around us -- plants, animals, humans and other so-called eukaryotes -- actually comprise a tiny minority of the planet's biodiversity. The rulers of this planet are actually bacteria and Archaea. A new research which includes genome sequencing data from over 1,000 new organisms has produced a refined tree of life that better matches reality. In this expanded tree of life two-thirds of all diversity on Earth is bacterial, while nearly a third is Archaea.

Smokers find a job harder and earn less, study suggests

In Europe and the United States, an increasing number of employers have adopted a smoke-free policy and may not hire people who smoke. This is because of the negative perception of smoking. Stanford researchers wanted to quantify just how large the economic burden of tobacco use is on the labour market. Their analysis suggests that nonsmokers are twice as likely to get hired than smokers. Tobacco users also earn $5 less per hour on average than nonsmokers.

Ayahuasca, the shamanic hallucinogen, could help treat anxiety

One new research on rats suggests that the magic brew could be very potent against anxiety if ingested over a prolonged time.

Digital images stored/read in synthetic DNA

For archiving purposes, at least, DNA -- the blueprint or genetic recipe that codes all life -- might be worth considering. One team, for instance, coded digital images into synthetic DNA using a novel method, then decoded and read this data.

Isaac Newton copied a "Philosopher's Stone" recipe. The manuscript will soon be available

The great physicist who invented Calculus in his 20s and gave the world the universal law of gravity transcribed countless pages from a famous alchemy manuscript which describes how to manufacture a key element for the Philosopher's Stone.

The 4 elements of great public speaking

The best public speakers have mastered these key factors.

Tiny spiders no bigger than a pencil tip are fastest in the world

Though minute, these are far from insignificant as their pray have learned the hard way. In fact, it's their small body that allowed them to become the fastest snapping spiders in the world!

Neanderthal and Human interbreeding couldn't produce male babies

People of European descent carry as much as 4 percent Neanderthal DNA, but the Y chromosome passed down from father to sons is entirely missing in the modern population. Scientists now think they know why.

Grammar police on social media are 'less agreeable people' in real life too, study finds

Those who take too much offence of improper grammar and typos in an informal situations were found have "less agreeable" personalities.

What the Zika virus looks like in 3-D

. A team at Purdue University in West Lafayette finally cracked the code, revealing a virus very much akin to the dengue and West Nile viruses.

Live fast, die young: the secret to surviving a mass extinction

Drastically reducing body size and, maybe most importantly, lifespan may have been the most important course of action evolution undertook to preserve some species, paleontologists argue.

California weather patterns shifting: less 'average years', more extremes like droughts

The Sunny State is going through its worst drought in the last couple thousand years. Unfortunately, these events will happen more frequently in the future.

Finally, there's a formula that describes heat transfer between nano-close bodies

Finally, a team of researchers have bridged the gap and found an accurate mathematical equation that can determine the "spectral radiative heat transfer rate between two closely spaced bodies, generalizing the concept of a blackbody to the case of near-field energy transfer."

Pig heart grafted to baboons still keep beating after two years

Five baboons were each hooked up with a pig heart alongside their own hearts. Essentially, these baboons lived with two hearts and the pig one still functioned two years on average after the grafting, marking a marvelous breakthrough in xenografting.

Ancient horse dung helps researchers find Hannibal's path across the Alps and into Rome

The exact path Hannibal took in this epic voyage across the Alps has been a matter of debate among scholars, but now scientists think they've finally found it by following some unlikely bread crumbs: ancient horse dung still teeming with preserved bacteria left by Hannibal's cavalry.

Touching a robot's 'intimate parts' arouses humans

Here's a great way to spend science dollars: see if humans literally find robots sexy. They do sort of, or so conclude Stanford researchers who asked volunteers to touch an anthropomorphic robot in various body parts.

Why depression makes you tired

Depression can be exhausting. Here's why.

Reverse photosynthesis turns plants into biofuels

Photosynthesis is maybe the most important chemical process on Earth, turning sunlight and CO2 into the oxygen we breath and the food we eat. This process can be reversed, however.

This is how you install the most powerful wind turbine in the world

Enercon's E-126 turbine towers 125 meters high and can generate a staggering 7.58 MW of electricity.

Human sacrifice may have helped the elite consolidate its position

The ritual of sacrifice is ubiquitous in all religions, be it self-offered or undertaken by a higher religious figures. Scholars are still investigating the object of sacrifice, and its role in shaping culture and society. One study makes an interesting hypothesis based on historical records: human sacrifice has repeatedly worked in favor of the ruling elite to consolidate their position in stratified societies. In egalitarian societies, human sacrifice was less wide spread and also less impactful.

3-D printed electronic egg could help save vultures

Fake 3-D printed eggs packed with sensors help scientist learn how vultures incubate their eggs. This way, they might be one day able to incubate their own eggs, without having to rely on vultures.

Amazing exoplanet has three suns

A gas giant called KELT-4Ab revolves in a stable 3-day orbit around its parent star, flanked by another two.

Archaeologists unearth what looks like the 2nd Viking Settlement in North America

If confirmed, the findings could rewrite history.

Buried treasure: pirates got high on marijuana eye patches

Divers stumbled across two pirate ships sunk fifteen miles off the island of Saint Lucia, in the eastern Caribbean Sea. What they found inside startled them.

Virtual Reality app lets friends meet in bars for drinks

VR company SecondHandLife unveiled a revolutionary new app that allows friends to immerse themselves together in a virtual bar, among others.

Rooftop solar could meet 39% of U.S. electricity needs

Sunny states like California, Texas and Florida topped the list of states where rooftop solar could generate the most energy.

West Antarctic Ice Sheet might melt faster, adding three extra feet to sea level rise by 2100

A refined model based on equations which accurately reproduced sea level rise events from hundreds of thousands of years ago suggests this massive ice sheet is disintegrating faster then previously thought.

An inflatable habitat module will soon be attached to the ISS

SpaceX will launch as early as April 8 an inflatable habitat module destined for the International Space Station.

Bonobos remember their old friends' voices, even after years of separation

The gentlest of all apes takes friendship very seriously. New research suggests bonobos can remember the voices of their friends and become highly excited once they hear them again, even after a long time had past since their last encounter.

Political conservatives more prone to stigmatize the mentally ill

As if living with a mental illness wasn't tough enough, many are stigmatized and discriminated by the rest of the 'mentally well' population.

There's now a blood test for concussions

A simple blood test can diagnose a concussion within a couple of hours from the injury, according to preliminary results. In the worlds of sports, these news might be a godsend as every day lost to recovery is precious.

There is still hope: scientists show how fisheries can double production

A new research modeled thousands of fisheries from around the world and found that a straightforward economic reform will not only help fisheries recover in only ten years, but double production by 2050.

Unicorns might have been real, but they look nothing like in fairy tales

Russian paleontologists dated the fossil remains of a Elasmotherium sibiricum, a giant beast the size of a mammoth with a saber like horn, and found these were 35,000 years old. That places the closest resembling unicorn animal in the same place and time with humans migrating and settling Asia.

After 115 years of history, Scotland closes its very last coal-fired plant

The largest and last coal-fired plant in operation in Scotland was officially shut down, marking an end to an 115-years-long history of burning coal in the country.

Very rare waterfall-climbing fish can walk like a salamander

Found in only eight caves on the border of Thailand and Myanmar, this eyeless fish can walk.

Older dads birth offspring that end up having fewer kids of their own

Evolution is not kind to older dads, a new research suggests. University of Göttingen in Germany researchers found that older fathers end up having fewer grandchildren. Apparently, mutations that appear in old age are transferred to the offspring.

Prairie dogs murder ground squirrels to stave off competition for food

Prairie dogs aren't as innocent as they look. Researchers have documented as the animals slaughter ground squirrels for control over food. This is the first time this sort of behaviour was documented among omnivores.

Donald Trump: 'I am not a great believer in man-made climate change'

GOP Presidential candidate Donald Trump met with the The Washington Post’s editorial board on Monday. For a full hour he spilled all sorts of non-nonsensical gibberish in his typical fashion: dodging questions and roll-out.

Religion and science: is there really a divide ?

Religious people were found to be more empathic, meaning they identified more with the feelings and struggles of other people. As such, the perceived divide between science and religion may be rooted in brain wiring.

Space laws: What happens if you commit a crime on the moon?

Well, technically if you're not a space pirate, you'll be prosecuted by the laws governing your home country. On the International Space Station, that's another story.

10 Beautiful Visual Mathematical Proofs: Elegance and Simplicity

"Beauty is the first test; there is no permanent place in the world for ugly mathematics," G. H. Hardy (1877-1947)

Supernova shockwave recorded for the very first time

Some stars go out with a bang -- a supernova explosion! Using optical images recorded by the now defunct Kepler telescope, astronomers witnessed for the very time the shockwave that follows a star's implosion once it runs out of fuel.

You need not look any further than your own body for proof of evolution

What does a weird tendon on your inner wrist have to do with evolution? This video explains.

Fungi eat yummy minerals from rocks using acid and mechanical force

Fungi were thought to have a minimal impact on minerals' bioweathering. A recent study suggests that fungi are a lot more aggressive than meets the eye. These use acid to access precious nutrients like iron and burrow deep into rocks using mechanical force to further their reach.

More Americans than ever acknowledge climate change is real

On the heels of the warmest winter on record, a Gallup poll found a record number of Americans perceive global warming as a serious threat. It doesn't sound like a coincidence.

Doubling renewable energy by 2030: not only feasible -- it's expensive not to

The International Renewable Energy Agency claims doubling worldwide renewable energy capacity fifteen years from now would provide savings which far exceed the costs.