Bitcoin is on the rise again. The digital currency is trading at over $18,000 and is approaching its record high of just under $20,000, which it reached back in December 2017. It has surged more than 50% in the past month alone. But is now the time to buy in? Catherine Coley, CEO of Binance.US, breaks down the biggest factors to Bitcoin's recent surge and what we can expect in the coming weeks and months.