Here’s our weekly collection of interesting stuff from the web. Enjoy, and have a great weekend!

• A coast-to-coast tour of America’s greatest landscapes by a newly minted LA grad.
• 35 graphs that show how your spending habits change as you age.
• A tiny arboretum of unsung plants.
• Four questions to ask yourself this winter.
• How plants can detect bombs. (via @BatesNursery)
• IA Confidential, the latest installment from the video team at the Miami-Dade County Extension office. (via Martha Golea)
• The science of email subject lines explained.
• Above: The best video of a weed-fighting superhero that you’ll see today.