Fossil shark teeth are abundant and can date the past in a unique way
Sharks have ruled the Earth’s oceans for 400 million years. Recent research on fossil shark teeth has discovered an ...
The Magazine2d
Carbon-neutral calcium carbonate process uses emissions from steel-making plant
Construction is imminent for a carbon-capture project aimed at reducing CO2 emissions from steel production while producing carbon-neutral calcium carbonate. At the U.S. Steel manufacturing facility ...