Carbon monoxide is sometimes referred to as a “silent killer”. Difficult to detect without an alarm, this colourless and odourless gas is both toxic and asphyxiating. In extreme cases it can kill within minutes.
Biologists say they have devised a new weapon against malaria by genetically engineering mosquitoes to produce mostly male offspring, with the hope of eventually wiping out the vectors of the killer disease.
Videographic explaining various types of knee injuries, one of the most common football injuries. Portuguese star striker Cristiano Ronaldo managed to play against Germany on Monday despite suffering from knee problems recently.