nucléaire
Washington (AFP) - US researchers announced a historic nuclear fusion breakthrough on Tuesday, hailing a "landmark achievement" in the quest for a source of unlimited, clean power and an end to reliance on fossil fuels. The Lawrence Livermore National Laboratory (LLNL) said it had used the world's largest laser to create, for the first time, a fusion reaction that replicated the process that powers the sun and generated more energy than it took to produce -– a goal pursued by scientists for decades. Nuclear fusion has been touted by its supporters as a clean, abundant and safe source of energy...
AFP
Washington (AFP) - US President Joe Biden seems increasingly determined to keep the "terrorist" designation on Iran's Revolutionary Guards, which Tehran is demanding be removed before it returns to a deal on curbing its nuclear program. "Each side is just hoping that the other would blink first," Ali Vaez, an Iran expert from the International Crisis Group, a conflict-prevention think tank, told AFP. Negotiations opened a year ago in Vienna to revive the landmark 2015 agreement that was supposed to prevent Iran from acquiring nuclear weapons. Under the presidency of Donald Trump, the United ...
AFP
Los Angeles (AFP) - Nuclear scientists using lasers the size of three football fields said Tuesday they had generated a huge amount of energy from fusion, possibly offering hope for the development of a new clean energy source. Experts focused their giant array of almost 200 laser beams onto a tiny spot to create a mega blast of energy -- eight times more than they had ever done in the past. Although the energy only lasted for a very short time -- just 100 trillionths of a second -- it took scientists closer to the holy grail of fusion ignition, the moment when they are creating more energy th...
AFP
Washington (AFP) - Concerns on Friday over US President Donald Trump's mental state have drawn focus on his power to unleash a nuclear attack. Two days after Trump supporters, under his encouragement, stormed the US Capitol and shut down Congress, House Speaker Nancy Pelosi said she had contacted the Pentagon's top general, Mark Milley, to understand how to prevent "an unhinged president" from using the secret nuclear launch codes to order a nuclear strike. As Milley presumably told her, the US constitution gives the president the sole power to launch a nuclear weapon. Congress cannot interfer...
AFP
Tehran (AFP) - Iran said Sunday its arch-foe the United States is facing "maximum isolation" after major powers dismissed a unilateral US declaration that UN sanctions on Tehran were back in force.Washington said the sanctions had been re-activated under the "snapback" mechanism in a landmark 2015 nuclear treaty -- despite Washington having withdrawn from the deal.As other signatories cast doubt on the move having any legal effect, Washington threatened to "impose consequences" on states failing to comply.But Iran's President Hassan Rouhani said a concerted campaign by Washington to pressure T...
AFP
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