Sayed Azeem Sadat

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Scientists Say Gold Comes From Colliding Dead Stars

Scientists say all the gold on Earth and throughout the universe is the result of colliding dead stars. Researchers from the Harvard-Smithsonian …

Researchers Find Biggest Viruses on Earth. They Have Named Them Pandoravirus

Mimiviruses, which are extremely large viruses, were discovered about ten years ago. The discovery prompted the scientific community to reconsider …

Embryonic stem cells could help restore sight to blind

Scientists have shown that light-sensitive retinal cells, grown in the lab from stem cells, can successfully integrate into the eye when implanted …

Why Ancient Earth Was So Warm

Greenhouse gases in the atmosphere kept the planet toasty, model shows.<p><b>Some three to four billion years ago, Earth was about as warm as it is today, but the sun was much dimmer.</b><p>This so-called faint young sun paradox, first identified by astronomer Carl Sagan in the early 1970s, has flummoxed many a …