90 tons, and 1600 years old! — This huge slab of glass is 1600 years old! It is around 90 tons in weight and measures 2 m x 4 m with a thickness of 45 cm. Located at a cemetery called Beth She’arim in Galilee in Israel, the “slab of Beth Shearim” is one of the finest…

An ancient coin and an ancient mystery — In 1054 AD is literally a spectacular year in Astronomy. That year, a new star appeared in the sky out of nowhere, became extremely bright for a few days and then dimmed entirely. That event was one of the only eight recorded supernovae in the Milky Way. …

India to make it’s own chips — India is poised to enter the semiconductor manufacturing club with an ambitious 20 billion $ investment. The joint venture between Vedanta and Foxconn will set up a 28 nm node manufacturing unit in the state of Gujarat, the Prime Minister’s home turf. About 100,000 people are expected to be employed…

Why the upstairs is getting full of junk — Between 2020 and 2021, more than a thousand space crafts were launched. By comparison, less than a hundred were launched in the two years from 2010 to 2012. The higher number of space craft launches also correlate with high space debris. The returning crafts burn up on re-entry. There are collisions between satellites. Rocket upper stages, broken satellites, debris from explosions and other objects become space debris. Around 75% of such objects end up in low orbits and poses threat for spacecraft and objects on Earth.

Smartphones don’t work underwater — Smartphone messaging does not work underwater. Blue tooth and WiFi services that rely on radio signals don’t propagate well in water. This is especially difficult for scuba divers and those engaged in snorkeling. That’s why professional divers learn upto 200 different hand signals — ranging from oxygen level, to the…

We will soon be missing a lot of them — One third of all tree species are facing extinction. The Botanic Gardens Conservation International (BGCI) released it’s World Tree report in 2021, where they found that 17,510 species of trees out of 58,497 are facing extinction. Of these, 2800 are critically endangered. 142 are extinct. In addition, there are thought…