Ancient Roman concrete arches contained volcanic ash, which helped them self-heal when cracks formed by reacting with water. This made them incredibly durable, lasting for millennia. nudes
China is developing the Haolong reusable cargo shuttle for supporting the Tiangong space station. The shuttle will launch on rockets, dock in orbit, and return via horizontal landing. Designed for efficiency and reuse, it advances China's commercial spa
NOAA’s solar coronagraph on the L-1 observatory is now active, improving solar monitoring by capturing the Sun’s corona to track phenomena like CMEs. This tool enhances space weather forecasting, which is crucial to minimize disruptions on Earth, suc
Skin is the body’s largest organ, making up about 16% of your body weight—and it’s constantly renewing itself. You shed nearly a million skin cells every day.
Hundreds of lizard species don’t have legs. Legless lizards had limbs at one point, but their arms and legs became smaller over millions of years until they disappeared entirely. Many legless lizards live underground, where it’s easier to slither thr
