Donald Trump fires top DHS official Christopher Krebs

President Donald Trump announced Tuesday evening that he has fired top US security official Christopher Krebs, whose agency declared the presidential election was ‘the most secure in US history’.  Krebs, who heads the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA), oversaw the election’s security effort to fight against foreign interference and fraud. He … Read more

Two chemicals in Earth’s ‘primordial soup’ created the first ever Krebs cycle

Metabolism is a key process in living things that enables fuel to be turned into energy, but its evolutionary origin is a long-standing enigma.   Now, a study by US researchers has found a simple reaction between two chemicals, called glyoxylate and pyruvate, in Earth’s primordial soup billions of years ago may have led to the … Read more