It's set to be opened on March 2, 2020, so those tinny voices from 2006 can call to us through the mists of time.

Construction workers in Seattle unearthed a long-forgotten time capsule at the Space Needle this week. Millions of people who visited the 605-foot tower in the past 35 years likely walked right by it. Not that they would have noticed. At some point long ago, there was an adjacent plaque advertising the capsule’s existence and noting that it should be opened in 2002. But somewhere along the way, that plaque disappeared.

DNA from a genetically modified goat, a spritz of perfume, sculptures so small you need a microscope to see them. They're all headed for the moon. The MoonArk is a sort of eight-inch-tall portrait of humanity, with more than 200 artists and designers contributing to it. There's space reserved for it on one of the privately-funded Moon missions competing for the Google Lunar Xprize. Lowry Burgess, a professor at Carnegie Mellon University and the...

After 220 years, some artifacts of the early United States are about to see the light of day. A 1795 time capsule buried at the Massachusetts State House by Paul Revere, Samuel Adams and William Scollay is expected to have its unveiling this evening at 6 p.m. The capsule was uncovered during repairs for a water leak at the State House last month.