A new look at ancient rocks suggests that a self-sustaining nutrient cycle in ancient oceans helped keep Earth's atmosphere ...

A nutrient feedback between phosphorus, sulfur and microbes may explain how Earth repeatedly rebuilt its oxygen-rich ...

Uncover the hidden history of alchemy, from ancient Egyptian mysticism to its pivotal role in shaping modern chemistry. Explore its secrets and discover ho ...

Can alchemy be described as a protoscience? Do ancient texts with obscure formulas and procedures describe mystic rituals and allegoric visions? Or do they record instructions to carry out real ...

Researchers have identified the ingredients in chemistry formulas from an 2,300-year-old Chinese text, revealing ancient metallurgy was more complex than expected. The Kaogong ji was written in China ...

A drawing of an orange, cloud-covered planet against a black background During the Archean Eon, 4-2.5 billion years ago, Earth likely looked very different than it does today. Its hazy skies may have ...

Ray, Prafulla Chandra 1861-1944 History of Hindu chemistry from the earliest times to the middle of the sixteenth century ...