Bats vibrate special vocal folds to produce low-pitched growls like those of death metal singers.
Where does the first sunrise happen every day and which place sees the first sunrise of the New Year?
Researchers have discovered secret scribbles and sketches that were likely scratched by an elite woman into a medieval manuscript more than 1,200 years ago.
Astronomers searching for radio signals that could be signs of extraterrestrial life have just gained access to South Africa's MeerKAT telescope.