Bulletin: O redwood tree, o redwood tree, can tree genetics save thee?

The devastating wildfires that ripped through California this year and last consumed nearly a fifth of the world’s giant sequoias, the largest trees on Earth by volume. According to official estimates, between 13 and 19 percent of the 75,000 sequoias over 4 feet in diameter were lost in just two years. While sequoias evolved with wildfire and need it to open their seed cones and to clear the forest floor so the seeds can germinate, the fires over the last two years—exacerbated by climate change-driven drought—were simply too hot.

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The Counter: Can canners still trust the Ball Blue Book, cornerstone of the American canning canon?

Last August, the Iowa State University (ISU) Extension and Outreach—the arm of the land-grant university that works directly with farmers, business owners, and families on practical science applications—quietly informed 4-H members that canned goods made with recipes from the Ball Blue Book would no longer be accepted for exhibits at county fairs. A year later, the news that ISU Extension was no longer recommending the Ball Blue Book, not just to 4-H, but to any home canner, roiled the Canning subreddit, an online community with nearly 80,000 members.

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