In the March 4 SN: Search for sustainable catalysts, deflating cancer’s defenses, species miscounts, frog spit secrets, an acrobatic bat robot, coconut-cracking crabs, baffling X-ray bump, neutron’s elusive lifetime, Zika’s baby photo and more.
OXYGEN DEPRIVATION Cancer cells (shown in blue) surround a blood vessel (red) in a mouse tumor. Cells on the tumor’s edge are dying, starved of oxygen. But treatments to starve tumors have come up short.
C. Michiels, C. Tellier and O. Feron/Biochimica et Biophysica Acta 2016
DYNASTIC CENTER Recovered DNA suggests that nine people buried in a huge structure called Pueblo Bonito (shown), located in northwestern New Mexico, belonged to a maternal dynasty that lasted for 330 years during the heyday of ancient Chaco society.
D. Kennett/Penn State
LIGHTING UP When stimulated with light, DNA “blinks” on, making cellular structures (chromosome shown) visible without the need for fluorescent dyes.