Live Breaking News & Updates on இயற்கை இணைப்புகள்|Page 4
Stay updated with breaking news from இயற்கை இணைப்புகள். Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
Do you remember the magic of hoar frost that I wrote about a few weeks ago? Water vapor in the air crystalizes directly into ice without going through the liquid phase. Under the snow, at ground level, the opposite happens. Latent heat from the earth stored months ago during days of summer sunshine gives snow crystals at ground level just enough energy to vaporize back into their gaseous form. Sublimation is the scientists’ term. The vapor rises just a bit, filtering into the snow, where it changes the structures of crystals as it solidifies again. The result is a zone of airy pockets and loose, granular snow topped by an icy ceiling; and above that a thick, insulating blanket made counterintuitively of ice and air. Best of all, this magical space remains at or near freezing. That might not usually seem warm, but after our weeks of subzero temps, we can probably agree that 32 degrees Fahrenheit sounds fairly pleasant. ....
Now is the time when eager gardeners start making plans for spring. Every additional backyard milkweed plant and unsprayed flower garden could host one more caterpillar and provide nectar for hundreds of pollinators. ....