A heatwave is a period of extremely hot weather, which is usually accompanied by high humidity. It i

Yellow fever is an acute viral haemorrhagic disease spread through the bites of infected mosquitoes.

Lassa fever is a viral infection caused by a single stranded RNA virus belonging to the arenaviridae family, with an incubation period of about 6-21 days.

Monkey pox is a rare viral disease. It's symptoms in humans are similar to those seen in smallpox patients in the past, although less severe.

Laughter is an involuntary response; it is not generally something you can force yourself to do.

Caffeine is the most widely consumed behaviourally active substance in the world.