Podcasts, once a curiosity, are now big business: An industry forecast says they'll draw $220 million in ads this year.

Why it matters: A new Interactive Advertising Bureau study also found that while three-quarters of podcast ads are direct-response (like ordering on Stamps.com), there's been an increase in brand awareness ads. These are the ads you typically see aligned with high-quality TV/video content.

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Data: Interactive Advertising Bureau; Chart: Chris Canipe / Axios

How it happened: The growth reflects an audio streaming boom, made possible largely through mobile apps like Apple Music and Spotify.

The audience: Edison Research and Triton Digital estimates 98 million U.S. adults listen to podcasts.

For kicks: Consumers prefer host-read ads over pre-produced ads 60%-40%, according to the study.

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Post-debate poll finds Biden strong on every major issue

Joe Biden speaks Friday about "The Biden Plan to Beat COVID-19," at The Queen theater in Wilmington, Del. Photo: Drew Angerer/Getty Images

This is one of the bigger signs of trouble for President Trump that we've seen in a poll: Of the final debate's seven topics, Joe Biden won or tied on all seven when viewers in a massive Axios-SurveyMonkey sample were asked who they trusted more to handle the issue.

Why it matters: In a time of unprecedented colliding crises for the nation, the polling considered Biden to be vastly more competent.

Bryan Walsh, author of Future
4 hours ago - Science

The murder hornets are here

A braver man than me holds a speciment of the Asian giant hornet. Photo: Karen Ducey/Getty Images

Entomologists in Washington state on Thursday discovered the first Asian giant hornet nest in the U.S.

Why it matters: You may know this insect species by its nom de guerre: "the murder hornet." While the threat they pose to humans has been overstated, the invading hornets could decimate local honeybee populations if they establish themselves.