00:00 Charles Darwin, aided by Alfred Russel Wallace, contributed to natural selection theory while fast plant growth is made easier with FastGrowingTrees.com's deals for spring landscaping and listeners get discount codes from sponsors Mint Mobile & Better Plants at checkout.

01:59 Alfred Russell Wallace co-developed natural selection theory; the podcast discusses his contributions alongside modern affiliate deals for listeners.

03:49 Wallace embarked on extensive expeditions, collecting natural history specimens and gaining recognition despite losing most belongings.

05:29 Wallace's expeditions led him to discover a distinct boundary between Asian and Australian fauna.

07:19 Wallace discovered a boundary separating Asian and Australian fauna, now known as The Wallace Line.

09:09 Alfred Russel Wallace identified a fauna divide now called The Wallace Line and later contributed broad classifications for Earth's biogeographic regions.

10:52 Alfred Russel Wallace identified The Wallace Line and contributed to classifying Earth's biogeographic regions.