An Aedes aegypti mosquito  in a laboratory in Campinas, Brazil, February 2nd, 2016. Photograph: Paulo Whitaker/Reuters

A new method to render male mosquitoes infertile by nuclear radiation could help reduce populations of insects carrying the Zika virus linked to thous(...)

Swords into ploughshares

Saturday’s International Atomic Energy Agency (IAEA) report on Iran’s compliance with its July agreement to decommission its nuclear weapons programme(...)

UAE vice president and prime minister, Sheikh Mohammed bin Rashid al-Maktoum with French foreign minister Laurent Fabius during their meeting at his palace in Dubai on Monday. Photograph: Karim Sahib/Getty Images

The European Union will consider this week whether to follow Washington’s lead and impose sanctions on Iran as a response to the country’s ballistic m(...)

US Secretary of State John Kerry is greeted by the US Ambassador to Austria Alexa Wesner as he steps from his plane upon arriving in Vienna on Saturday on what is expected to be “implementation day,” the day the International Atomic Energy Agency (IAEA) verifies that Iran has met all conditions under the nuclear deal. Photograph: Kevin Lamarque/Reuters

International sanctions on Iran will be lifted on Saturday when the United Nations nuclear agency declares Tehran has complied with an agreement to sc(...)

Expectations have been high in Tehran and western capitals over Iran’s reintegration in the global economy, with European businessmen rushing to Tehran to propose deals. Above: a man drives a motorcycle in Tehran.  Photograph: Simon Dawson/Bloomberg via Getty Images

A punitive sanctions regime progressively imposed on Iran over the past decade could begin to lift as early as Monday, if the International Atomic Ene(...)

Tepco workers standing before the stricken Fukushima Daiichi nuclear power plant on February 28th, 2012. Photograph: Yoshikazu Tsuno/AFP/Getty Images

David McNeill in Tokyo The Japanese government says it has agreed to compensate a man who contracted leukemia while working at the Fukushima Daiichi n(...)

Barrack Obama during a news conference in Addis Ababa, Ethiopia, today. Photograph: STR/EPA

President Barack Obama has lashed out at Republican presidential candidates for making what he called “ridiculous” claims about his policies and “outr(...)

US secretary of state John Kerry (C) is pictured during an Iran nuclear talks meeting with the Iranian foreign minister in Vienna on Friday. Photograph: Carlos Barria/AFP/Getty Images

The UN nuclear watchdog could issue a report on its investigation into past Iranian research suspected of being linked to nuclear weapons development(...)

An Iranian security guard stands as US secretary of state John Kerry meets the Iranian delegation including foreign minister Mohammad Javad Zarif at a hotel in Vienna where the  nuclear talks meetings are being held. Photograph:  Carlos Barria/Reuters

Tehran and world powers were still shy of a breakthrough at nuclear talks yesterday as foreign ministers flew in to lend heft to negotiations that foc(...)

US secretary of state John Kerry leans his crutches on a table before delivering his statement on Cuba outside the hotel where the Iran nuclear talks meetings are being held in Vienna, Austria. Photograph: Carlos Barria/AFP/Getty Images

The global nuclear watchdog has said its head would fly to Tehran to discuss some of the last big issues that need to be resolved so that Iran and wor(...)