Interesting Engineering on MSN20h
China unveils 5,000 metric ton-heavy tunnel boring machine with largest-diameter
China has developed its largest tunnel-boring machine, Jianghai, with a 54.4-feet diameter and 30% increased tunneling efficiency.
Business Insider15h
The 7 best espresso machines for every budget and experience level
It's luxurious and can be hard to find, which is why we tested the best home espresso machines. Don't let decoding the lingo or the daunting price tag deter you: we found machines for every budget ...