nasa, andromeda, galaxy, space, gamma rays,

Highest-energy light from a gamma-ray burst discovered

Gamma-ray bursts are the most powerful explosions in the cosmos. These explosive events last a fraction of a second to several minutes and emit the same amount of gamma rays as all the stars in the universe combined. Nov 22, 2019
oral health, teeth, health, dentist,

How chewing sugar-free gum may prevent dental cavity

Chewing sugar-free gum not only reduce the advancement of dental caries, it could be used as a viable preventative agent, in comparison to non-chewing control methods such as oral health education and supervising toothbrushing programmes alone. Nov 21, 2019