http://www.sciencemag.org/news/2020/06/can-scientists-solve-darwins-abominable-mystery-about-angiosperm-explosion

More than 150 years ago, Charles Darwin was amazed by the explosion of angiosperms, flowering and fruit-bearing plants, in the fossil record: Four major families emerged in the span of just 10 million years, a mere 10 million years after the first flowering plant fossil appeared. Now, scientists are using DNA analysis of modern flowers—and their pollinators—to solve Darwin’s “abominable mystery” of when flowering plants emerged and diversified, researchers write in Science. Watch the video to find out where Darwin’s mystery stands well over a century later.