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Blood Types Are Weirder Than You Think

Season 13 Episode 8 | 16m 20s

Across life on Earth, blood comes in blue, green, purple, even clear. But why? And what makes your blood different from mine? This is the strange world of blood—what it does, why it varies, and why we can’t live without it.

Aired: 07/09/25
Extras
Celebrate the life and career of Pulitzer Prize-winning poet Mary Oliver.
Preview: 250 Years of Americana
Soybeans may soon be part of the asphalt beneath you.
A Vermont couple finds new ways to better protect their land from drought and floods.
An Iowa farm thrives as one of the state’s few Black-owned farms.
A Georgia farm keeps the produce coming year-round by planting and harvesting in different locations
See how college students are turning soybeans into new products like baby wipes.
A California farmer shares easy-to-grow mushrooms with giftable box kits.
A Minnesota farm family plants a new kind of wheat that restores the soil and saves water.
A Montana rancher honors his ancestors, and Mother Earth, by restoring native grasses to his land.
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