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Evidence of glass during the chalcolithic has been found in Hastinapur, India. [24] The earliest glass item from the Indus Valley civilization is a brown glass bead found at Harappa, dating to 1700 BCE. This makes it the earliest evidence of glass in South Asia. [3] [25] Glass discovered from later sites dating from 600 to 300 BCE displays ...
For Earth Day on April 22, interesting facts including who invented it, why it's on that date, and how it turned into a global movement. ... April 22, 2024 at 11:13 AM. ... Stash of Roman-era ...
A 2015 study estimated that there are roughly 3 trillion trees on earth, give or take a few million. Since there are around 8 billion people currently living on the planet, the math boils down to ...
Earth Day is an annual event on April 22 to demonstrate support for environmental protection.First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) [1] including 1 billion people in more than 193 countries.
A glass building facade. Glass is an amorphous (non-crystalline) solid.Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics.
Obsidian (/ ə b ˈ s ɪ d i. ən, ɒ b-/ əb-SID-ee-ən ob-) [5] is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth.
Did cost the Colledg a Month's discourse. [ 20 ] Diarist George Templeton Strong wrote (volume 4, p. 122) of a hazardous sudden breaking up of pedestrian-bearing ice in New York City's East River during the winter of 1867 that "The ice flashed into fragments all at once like a Prince Rupert's drop."
Themed “Our Shared Home,” this year’s Call to Earth Day focuses on bridging the gap between humans and wildlife. Over 200,000 participants, including 235 schools, took part this year.