Save Earth

A strange little side quest

Between one round of Save Earth and the next, this is worth knowing: Our solar system formed about 4.6 billion years ago from a cloud of gas and dust collapsing under gravity. The same trail leads to another fact: Modern chess traces back to the Indian game chaturanga, recorded around the sixth century and built around pieces representing parts of an army. That history is one reason familiar mechanics can still feel new when they are recombined well.