We asked readers to share the items they’ve held on to as reminders of love. The responses ranged from uplifting and funny to heartachingly sad. Share full article Many of the quiet keepsakes started ...

Inspired by the Japanese art of kirigami, an MIT team has designed a technique that could transform flat panels into medical devices, habitats, and other objects without the use of tools.

Compact objects are compact stellar remnants, such as white dwarfs, neutron stars and black holes and specific types of these objects (e.g., pulsars and boson stars), as well as their larger ...