According to a new study, the method of opening the door to this unprecedented look inside living cells - called DNA microscopes - has been completed over a period of six years.
This shark often uses light from the abdomen to camouflage and sneak away prey.
Certainly everyone used to have a childhood attached to a bug named fireflies, a light flickering every night that any child is interested and curious.
A new drug that causes the brain cancer cells to glow during surgery is being used for the first time in Australia.