CITY LENS

For decades, scientists have debated whether the earliest humans survived mainly by hunting animals or scavenging carcasses left behind by predators. Now, a new study of 1.6 million-year-old fossils from Kenya suggests the answer may be far more complex. Researchers analysing ancient animal bones, stone tool marks and hominin remains from the Koobi Fora Formation…

Hippocrates (Image: Wikipedia) Cut your finger, and within days the skin knits itself back together without a single instruction from you. Catch a mild cold, and your body fights it off while you sleep. We tend to credit medicine for making us well, yet a great deal of healing happens on its own, quietly, inside…

Planets are often described as ancient, unchanging worlds. Planets are born out of chaos, shaped by violent collisions and swirling dust. They grow, they evolve, and in their own way, they age. Some endure for staggering lengths of time. Others meet surprisingly dramatic ends. So what is the typical lifespan of a planet? The answer…