Celebrate Pi Day and read all about how this number pops up across math and science on our special Pi Day page. Grab something circular, like a cup, measure the distance around the circle, and divide ...

For Bitcoin to flip silver today, it would need to more than triple, landing at a price os about $248,000 per coin. That's not an absurd amount to gain during 10 or 20 years for a scarce coin with ...

Abstract: this paper proposed a cross-chain multi-dimensional reputation model based on block-chain to deal with the nodes’ risk assessment in block-chain. When the nodes joined the network, the block ...