Here’s our weekly digest of interesting and useful links from around the web. Enjoy, and have a great weekend!

• Retail spending is slow, but people are still spending.
• 50 years of LED tech. (via @Carolyn LaWell)
• Lichens!
• Related: Reflecting pool at the Lincoln Memorial drained due to algae invasion.
• Science makes it true: To be more productive, watch cat videos on the internet.
• London wants its own High Line, but underground.
• Above: Water rates are going up. They won’t stop. (via CLCA)

Here’s a collection of some of the best stuff our editors have found on the Internet this week. Enjoy!

• Alabama legislators consider repealing the state’s controversial immigration law.
• Words of advice from master salesman Ron Popeil.
• Do your customers get the joke?
• What you plant can determine what you can’t.
• How green is your Christmas tree?
• Deer hunters take note: You can win fabulous cash prizes from the Tree Care Industry Foundation for your biggest buck.
• Above: You’ve heard of the High Line. Meet the Low Line – an underground park proposed in a defunct New York City trolley station.

Here’s a round-up of the best stuff our editors have found online this week.

Best links:

• We’ve written about New York’s High Line park before, but this video and accompanying Google Street View tour are pretty amazing.
• A landscape crew member was killed when he used a mower to try and keep warm.
• Try this list of great interview questions from Seth Godin.
• EPA removes the 40 percent turf restriction from its WaterSense program.
• The GIE+EXPO will be in Louisville until 2018, and won’t have Saturday hours next year. Miss our coverage? Find it all here.

Tweet of the week:
@chris_heiler gives you insight into social media, Texas and the mind of his young son. He’s really all things to all people.