In the April 29 SN: Proton puzzles, venomous swimmers, seeking early signs of autism, maximum entanglement, cephalopod intelligence insights, glass frog mothering techniques, Einstein on TV, touchy tyrannosaurs, seeing cells in 3-D and more.
ON TRACK Neutrophils (red) crawl along the walls of capillaries in a mouse lung (tracks shown in blue). In mice deficient in a key protein, these immune cells couldn’t move as far (left) as those in mice that had the protein (right).
B.G. Yipp et al/Science Immunology 2017
RIDE ON Mongolian horses (shown) and other present-day horse breeds have less genetic diversity than domesticated horses did around 2,000 years ago.