A new study finds that the conscious perception of visual location occurs in the frontal lobes of the brain, rather than in the visual system in the back of the brain. The results are significant given the ongoing debate among neuroscientists on what consciousness is and where it happens in the brain.

Mitochondria, tiny structures present in most cells, are known for their energy-generating machinery. Now, researchers have discovered a new function of mitochondria: they set off molecular alarms when cells are exposed to stress or chemicals that can damage DNA, such as chemotherapy. The results could lead to new cancer treatments that prevent tumors from becoming resistant to chemotherapy.

Many headphones that were on sale for Black Friday remain on sale. Get Bose QuietComfort 35 II for $279, save $100 on Jabra Elite 85h and score on Sony’s “Bose killer” WH-1000XM3.