Concrete, the second-most-used material on Earth, generates about four times more CO2 emissions than planes. MIDDLESBROUGH, England — Behold one of the world’s greatest slag heaps: A towering ...
The ancient Romans were masters of building and engineering, perhaps most famously represented by the aqueducts. And those still functional marvels rely on a unique construction material: pozzolanic ...
"Tim Sheehy’s reputation as a SEAL is one of excellence and bravery. He was a great teammate, a strong leader and, most importantly, a good friend to so many of our brethren," the 19 SEALs and ...