As the Organization of the Petroleum Exporting Countries (OPEC) braces to meet in Algiers on September 28, there are pressures from different corners on the group to take a decision on oil supply. However, the OPEC has to take a very cautious approach. Any hasty step or quick fix to limit the production to raise the crude price may …

Millions of Americans are going to vote for someone other than Donald Trump and Hillary Clinton in November. The Libertarian Gary Johnson and the Green Party candidate Jill Stein together command about 10 percent of the vote in recent polls. Yet their supporters, who feel alienated from the two-party system, probably don’t want their country to adopt a European-style multiparty …

  One of the big attractions of 3-D printing is that it’s so cheap and simple. Just come up with a design, and that nice little machine you bought for $499.99 at Staples will extrude it in layer after layer of warm plastic that hardens as it cools. And then you have…a plastic thing! If you want your thing made …