saiprasanth

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How I Transformed Sewage Into Fresh Water [Video]

A little DIY distilling<p>Say the apocalypse happens tomorrow. The good news: You survive! No more credit card debt or miserable commutes. The bad news? Infrastructure has collapsed and there’s no clean drinking water. Most people can’t last a few days without it, so what we need is a reliable way to …

LED Lights Track People And Broadcast Messages

Lamps are ubiquitous. Some of them are watching you.<p>Have you ever noticed the lamps on the ceiling of your local supermarket? Probably not. But, in the future, those lamps may notice you.<p>Electronics company Philips is piloting a system in which LED store lamps track shoppers, the company announced. …

Why it’s best to be brief on the mysteries of the universe, radio review

Gillian Reynolds reviews the week's radio, including Peter Higgs's appearance on The Life Scientific (Radio 4) and File on 4's examination of the floods<p>About halfway through yesterday morning’s <b>The Life Scientific</b> on Radio 4, Professor Jim Al-Khalili asked Peter Higgs, joint winner of last year’s …

Your Next Cooking Oil Could Come From Hemp

A new strain of hemp produces oil with all the qualities needed for fine frying.<p>Agricultural hemp produces strong and decay-resistant fibers, a versatile oil, and requires little in the way of herbicides, since it outcompetes weeds. Hemp oil isn't widely used for cooking, though, partially because …

Top Ten PV Manufacturers from 2000 to Present: A Pictorial Retrospective

From 2000 (shipments of 252 MWp), through 2013 (estimated shipments of 33.4 GWp), PV industry shipments to the first buyer have grown by a compound …

Watch: Here’s Why Solar Is Approaching the Mainstream

Even though the president mentioned solar in his State of the Union speech as one of the fastest-growing energy industries, that doesn't mean the …

10 US cities making massive emissions cuts through energy efficiency

Buildings are the largest single source of carbon emissions in America, pouring out 40% of nationwide emissions and up to 75% of all emissions in …

Is Natural Gas Helping or Hurting Renewables?

<b>Fossil Fuels</b><p>Some call it a bridge to the future. Others call it a bridge to nowhere. The Energy Gang looks at the market dynamics at play.<p>Stephen …

Initial agreement signed for mega solar project in India

A group of state-owned Indian companies have signed an initial agreement for setting up what the government says is the world's largest solar power …

Technology predictions for 2014: smarter cities, bigger games

This is the year that cities become even smarter. Local authorities and councils the world over have invested in social capital and connected infrastructure with the aim of better understanding the needs of their citizens.<p>The Watershed arts venue in Bristol, for example, organised a Playable City …

Does the positron 'excess' really exist?

The positron “excess” measured by two independent space missions and linked by some physicists to dark matter or pulsars does not exist, according to …

Burning Trash With Water [Video]

Astronauts on board the International Space Station study the strange properties of supercritical water.<p>Burn baby burn. Today, we use water to put out fires. But what if we could use it for the opposite effect? Astronaut researchers on the International Space Station are experimenting with water …

The Universe Can Now Be Measured to 1% Accuracy

The Universe is so big that it can be difficult to accurately measure the huge distances between things in it. But no longer, because now a team of …

Scientists Move Levitating Objects Through Space for the First Time

Now rather than merely lifting objects with sound waves, scientists can move them in every direction.<p>Levitation isn't just for mystics anymore.<p>A Japanese technology team has demonstrated ultrasonic levitation of objects that for the first time works in three dimensions. This means that as opposed …

The Batteries of the Future Could Be Powered By Rhubarb

Building the perfect battery is a hard problem. Batteries either too inefficient or too expensive or too unstable to power the renewable gadgets of …

Micromotors clean polluted water

Researchers in Germany have invented micromotors that can propel themselves through water while degrading organic pollutants. The micromotors, which …