The organiser of an annual Tiananmen Square massacre vigil in Hong Kong has been arrested on its 32nd anniversary as police threatened to jail anyone who breaks into the park it is held in.
COVID-19 impacting mental health is "the norm" and affects the brain in a wide range of ways including fatigue and depression - especially in mild cases, according to new research.
Parts of the Arctic sea ice are thinning up to twice as fast as previously thought, meaning some parts of the region could become ice-free by 2040, according to new research.
