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

Catolica Portuguesa Universidade

Age: 39

Ahmadinejad wields axe to cement his position

Iran's foreign minister has been replaced by the head of the country's nuclear programme, in a move that is being seen as the strengthening of the position of President Ahmadinejad and an indication of a tougher public stance towards the global community.

Chemical romance: How did chemists become the greatest force in fragrance?

Few perfumes are crafted by hand in a dusty atelier. Instead, they come to life in the lab.

Is Liverpool owner's wife the new queen of the WAGs?

The glamorous face peering down from the directors' box at Liverpool's Europa League match on Thursday night wasn't a pop star or gossip column regular. Linda Pizzuti had the looks – and was credited with inspiring the impressive hat-trick from captain Steven Gerrard in his side's 3-1 defeat of Napoli – but the new darling of the Kop is far from an average WAG.

Trio shares Nobel prize for economics

A British-Cypriot and two Americans, including one nominated by President Barack Obama to the US Federal Reserve board, won the 2010 Nobel Prize for Economics for their work to explain persistent unemployment.

US jails neuroscientist for 86 years

Aafia Siddiqui, a Pakistani neuroscientist convicted of attempting to kill US military personnel, has been sentenced to 86 years in prison by a US judge. Siddiqui was being interrogated by US officials in Afghanistan when she grabbed a rifle and opened fire, shouting "death to Americans".

A hard chair equals a hard heart

Want to talk tough? Sit on an uncomfortable chair – for the texture of objects around us affects our behaviour

Planet winds of 6,200mph

A powerful storm on a planet in another solar system has been spotted by astronomers. Winds blowing at 6,200mph were detected on the distant world, which orbits a Sun-like star 150 light years away. The "exoplanet" HD209458b has about 60 per cent the mass of Jupiter and is located near the constellation of Pegasus. Circling its parent star at just a 20th of the distance between the Earth and the Sun, it is heated to a temperature of 1,000C. But since the planet always has the same side facing the star, one half is very hot while the other is much cooler. "On Earth, big temperature differences inevitably lead to fierce winds, and as our new measurements reveal, the situation is no different on HD209458b," said Dr Simon Albrecht, one of the scientists from the Massachusetts Institute of Technology in Boston, US, whose research is reported in the journal Nature.

Sweden's free schools model has 'limited impact'

The Swedish model of schools championed by Education Secretary Michael Gove has not transformed the academic achievement of the country's pupils, a report suggests today.

Postgrad Lives: 'Taking this PhD has transformed my idea of what I want to do'

Universities in the US can give British graduates better resources and more choice

Rubber balls used in Mesoamerican game 3,500 years ago

Stable rubber may have taken until the 19th century to reach the Old World, but ancient Mesoamericans had been playing ball with the stuff since 1,600 BC. And new research suggests not only were they the world's first polymer scientists, but they could also mix and match rubber compounds for different uses.

US Fed set to keep interest rates near zero for 'extended period'

The Federal Reserve has kept US interest rates at rock-bottom levels, and issued a policy statement seemingly designed not to rock the boat while markets digest the European sovereign debt crisis.

Carl Kaysen: Economist, author and special assistant to John F Kennedy

Instructed by my supervisor, the Canadian economist Harry Johnson – his students, such as Amartya Sen, later a Nobel Prize winner and master of Trinity, Mahbub-ul-Hay, later of the World Bank, and the rest of us reading Part II Economics, did as we were told – I attended a series of lectures by Carl Kaysen.

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