News According to reports, federal prosecutors will seek the death penalty against Boston Marathon bombing suspect Dzhokhar Tsarnaev

The twin blasts killed three people and wounded more than 260 others at the end of the city's marathon in April 2013

Steve Connor: Spreading a little sunshine for the dawn of a new age

It is fair to say that without photosynthesis life on Earth would be very different. It is arguably the most critical biological process. It has allowed life to flourish but it is also the basis of advanced, industrialised societies which are built on the energy of fossil fuels stored in the ground. Plants have developed a form of energy conversion that scientists would love to emulate. Using a pigment, chlorophyll, and a sophisticated bagfull of enzymes called a chloroplast, plants are able to convert the energy of the sun, and the carbon dioxide of the air, into a chemical fuel that can be stored as a fossil fuel for millions of years.

GM viruses offer hope of future where energy is unlimited

Breakthrough as US researchers replicate photosynthesis in laboratory

Marketing multi-touch technology

Entrepreneur Ralph Cochrane wants to go to LA to market the multi-touch technology produced by his company, www.touch-it.com

Hard science and soft humanity: At home with Ian McEwan

Ian McEwan's new novel, Solar, satirises the low compulsions of an absurd scientist but celebrates the high aims of scientific research. Boyd Tonkin meets the 'imaginative rationalist' of British literature

Errors & Omissions: Those rampaging nouns have been on the loose again

The 1960 science-fiction novel A Canticle for Leibowitz concerns a community of Latin-speaking monks surviving in an America devastated by nuclear war.

Batteries: The power behind the phone

Our gadgets are more advanced than ever. But the batteries that charge them use 200-year-old technology – and the strain is starting to show, says Simon Usborne

A technological powerhouse to rival MIT and Oxbridge

The French are waking the sleeping giant

Under the weather? Just swallow a doctor

The day when patients can “swallow their doctor” has come a step closer with the development of a submicroscopic nanoparticle that acts as an intelligent pill to deliver drugs when and where they are needed in the body.

Americans dare to hope for a happier 2010

First data of new year suggests recovery is on track but job fears persist

Letters: Fate of Gary McKinnon

Why have ministers failed to help Gary McKinnon?

Paul Samuelson: Nobel Prize-winner widely regarded as the most important economist of the 20th century

At precisely eight in the morning of 2 January, 1932, a brilliant first-year student, aged just 16, wandered into a lecture on Thomas Malthus at the University of Chicago – and in his own words, "was born again as an economist." Thus began the career of Paul Samuelson, arguably the most important, and certainly the most widely read, academic economist of the 20th century.

Nobel economist Samuelson dies, aged 94

Economist Paul Samuelson, who won a Nobel Prize for his effort to bring mathematical analysis into economics and helped shape tax policy for President Kennedy, has died at home aged 94.

Barack Obama: Renewable energies will drive the renewal of American pride

The Pentagon has declared our dependence on fossil fuels a security threat. Veterans from Iraq and Afghanistan are travelling the country as part of Operation Free, campaigning to end our dependence on oil. Leaders in the business community are standing with leaders in the environmental community to protect the economy and the planet we leave for our children. The House of Representatives has already passed historic legislation.

3D printers: Super models

They can make detailed replicas of anything from your unborn child to an active volcano in moments. So, asks Tim Walker, how long will it be before there's a 3D printer on every desk?

Will Ed Miliband eclipse brother David?

The younger Miliband spoke to the TUC – with many insiders believing he may overtake David to the leadership
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Google marks the 81st anniversary of the Loch Ness Monster's most famous photograph
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Apparently McDonald’s has trouble making sausage and eggs at the same time as burgers and chicken
newsNo Was fast food chain was aiming for the munchies market?
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Kevin Spacey and artistic director Matthew Warchus at the Old Vic party to honour Spacey
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Revealed: Why Mohammed Emwazi chose the 'safe option' of fighting for Isis, rather than following his friends to al-Shabaab in Somalia

Why Mohammed Emwazi chose Isis

His friends were betrayed and killed by al-Shabaab
'The solution can never be to impassively watch on while desperate people drown'
An open letter to David Cameron: Building fortress Europe has had deadly results

Open letter to David Cameron

Building the walls of fortress Europe has had deadly results
Tory candidates' tweets not as 'spontaneous' as they seem - you don't say!

You don't say!

Tory candidates' election tweets not as 'spontaneous' as they appear
Mubi: Netflix for people who want to stop just watching trash

So what is Mubi?

Netflix for people who want to stop just watching trash all the time
The impossible job: how to follow Kevin Spacey?

The hardest job in theatre?

How to follow Kevin Spacey
Armenian genocide: To continue to deny the truth of this mass human cruelty is close to a criminal lie

Armenian genocide and the 'good Turks'

To continue to deny the truth of this mass human cruelty is close to a criminal lie
Lou Reed: The truth about the singer's upbringing beyond the biographers' and memoirists' myths

'Lou needed care, but what he got was ECT'

The truth about the singer's upbringing beyond
Migrant boat disaster: This human tragedy has been brewing for four years and EU states can't say they were not warned

This human tragedy has been brewing for years

EU states can't say they were not warned
Women's sportswear: From tackling a marathon to a jog in the park, the right kit can help

Women's sportswear

From tackling a marathon to a jog in the park, the right kit can help
Hillary Clinton's outfits will be as important as her policies in her presidential bid

Clinton's clothes

Like it or not, her outfits will be as important as her policies
NHS struggling to monitor the safety and efficacy of its services outsourced to private providers

Who's monitoring the outsourced NHS services?

A report finds that private firms are not being properly assessed for their quality of care
Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

The Tory MP said he did not want to stand again unless his party's manifesto ruled out a third runway. But he's doing so. Watch this space
How do Greek voters feel about Syriza's backtracking on its anti-austerity pledge?

How do Greeks feel about Syriza?

Five voters from different backgrounds tell us what they expect from Syriza's charismatic leader Alexis Tsipras
From Iraq to Libya and Syria: The wars that come back to haunt us

The wars that come back to haunt us

David Cameron should not escape blame for his role in conflicts that are still raging, argues Patrick Cockburn
Sam Baker and Lauren Laverne: Too busy to surf? Head to The Pool

Too busy to surf? Head to The Pool

A new website is trying to declutter the internet to help busy women. Holly Williams meets the founders