Megyn Kelly took on her former Fox News colleague Bill O'Reilly in blunt terms, revealing she had once gone to her bosses to complain about O'Reilly's behaviour.

Facebook is taking steps to improve its Trending Topics section, after taking heat from conservative critics over claims it tampered with the feature to shut out right-leaning news topics.

Four of America's wealthiest businessmen laid the foundation for Ted Cruz's now-surging Republican presidential campaign and have redefined the role of political donors.