Ethereum has had its best stretch in years recently, posting double-digit percentage returns in July and August. It also reached a new all-time high of nearly $5,000 on Aug. 24, although the price has pulled back since then. Of course, plenty of cryptocurrencies have been successful for short periods of time. The long-term winners are much fewer and further between. You could already consider Ethereum part of that group during its first 10 years. Since its launch in 2015, it's up more than 140,000% (as of Sept. 2). The question for crypto investors is whether Ethereum is still a good long-term investment. Although ... (full story)