This is the second in a series of posts about my book, The Four Realms of Existence. Source: Harvard University Press/Used with permission The world we live in is filled with things that we ...

Continents are political—but life follows its own map. From Australia’s isolated species to the ancient lineages of the Palearctic, these 7 realms redefine how we divide our world. Listen: Fans boo ...

The talk is part of the Silicon Valley Astronomy Lecture Series, now in its 27th year. The story of our existence can be told as a passage through nine interwoven realms—each revealing a new layer of ...

This is the second in a series of posts about my book, The Four Realms of Existence. The world we live in is filled with things that we distinguish from other things. Perhaps the most fundamental ...