Gradient nails have come back this Summer in a big way with celebrities like Kylie Jenner and Jennifer Hudson wearing them. Some polish enthusiasts, however, have opted to flip the gradient look and ...

UNDER EMBARGO UNTIL 16:00 GMT / 11:00 ET WEDNESDAY 15 FEBRUARY 2023. Today, species richness peaks in equatorial regions but until now there has been no clear explanation for this. By analysing fossil ...