If you dig straight down...

China wants to build tunnels from its mainland to several of its islands: Hainan, Macao, etc. They're getting international notice because one of the islands they've proposed digging to is Taiwan, and that always gets people's attention. But if you read the article closely you find

Most of the projects will be constructed beneath the water, but the construction of some bridges is also needed, said the expert, adding that some technical problems involving the handling of rock and soil are yet to be solved.

Don't get me wrong: I know that building an extended undersea tunnel is not like digging a ditch. But still.... "some technical problems" sounds like "where did we park the frontloader? What do you mean you lost the keys?" [via Simon World]