The biggest jigsaw puzzle in the solar system has a split personality: The number and sizes of Earth's tectonic plates can flip, according to a new study. Today, the pieces of Earth's broken shell are ...

My jigsaw often sits for months, just gathering dust. But then I’ll need to cut out an intricate pattern for a hobby project, saw into a countertop to install a kitchen sink or cut material like thin ...

Last year correspondent Mo Rocca purchased a thousand-piece jigsaw puzzle of a 1933 Diego Rivera mural. He didn't expect to get to it until he was 80. Well, things have changed. And he is not the only ...

The lymphatic system plays a key role in maintaining the body’s fluid balance and supporting immune defences. Lymphatic vessels are composed of a single layer of endothelial cells, allowing the ...