Goldspotted Oak Borer

Close-up of black and yellow oak borer beetle.

Invasive Beetle has Killed Over 200,000 Southern California Oak Trees, Raising Wildfire Risk

The rapid spread of the Goldspotted Oak Borer is killing hundreds of thousands of oak trees, undermining habitat and increasing wildfire danger across Southern California.

March 9, 2026 - ABC7 Eyewitness News

Agrilus auroguttatus image

Southern Californians Survey Trees for Destructive Oak Pest

Hundreds of volunteers across five counties participated in the first Goldspotted Oak Borer Blitz, surveying oak trees for signs of the invasive beetle and contributing valuable data to help protect Southern California’s native woodlands.

June 22, 2025 - UC ANR Green Blog

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

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The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.