this new, different Matrix lives up to the legacy of the original trilogy in terms of character, action, and the philosophical arguments it addresses. Throughout, Wachowski makes statements both bold and sly about Twitter mobs, gaslighting authority figures, shifting alliances, and the ongoing stru...

How do you make a working human heart? Scientists can turn stem cells into beating heart cells, but getting them to organize into a 3D heart requires a scaffold. At the Massachusetts General Hospital in Boston, Harald Ott and his team are reusing the scaffold that nature provides. They're stripping...