- casualSTEM
- Posts
- Plant Lights | Hot Sand | Crying Plants
Plant Lights | Hot Sand | Crying Plants
Issue #220
Friendly reminder: Itās still summer until September 22nd. Donāt let coffee flavors and Halloween supplies fool you!
āSteve š
Get the weekly email that explains science in sweatpants. Stay smart for free.
Plant Lights
Glow-in-the-dark succulents make the best night lights. Researchers figured out how to make our cozy plants glow.
Treated leaves with strontium aluminate microparticles
Silica coating protected plant tissue from the phosphorescent material
Glowing lasts hours and recharges w/ light exposure
Succulent glow could replace traditional ambient light sources and offers sustainable evening lighting. Photosynthesis and overall plant health were not harmed, though longer studies will review any lasting impacts. Cool, now do it to pumpkins.
This weekās poll question is in āUnnatural Selectionā below
Hot Sand
Finland runs on sand energy. Well, at least some homes are making use of a massive sand battery for their heating needs.
Sand battery = ~42.5ā tall x 49ā wide, 100 MWH capacity
Stores excess electricity as heat in ~2,000 tons of sand
Heats up to 1,112 ĀŗF
The battery can heat an entire town for a week in the winter, though it is intended to buffer shortages instead of being a primary source. Estimates predict it will cut carbon emissions by 70% and reduce wood chip usage in the region. But does it look like a sand castle?!
The glowing succulent news got me excited about our casualSTEM succulent sticker! So hereās a look back at that stickerās origins. (I still have a few sticker sheets left, let me know if you want a set!)
Crying Plants - If a tree cries in the forest
Turns out sad plants actually cry. Researchers tuned in to plant emotions and heard audible signals when their lab garden was thirsty or stressed.
Crying plants produce 35 sounds per hour
While others only speak up once an hour
Ultrasonic plant chatter is inaudible to most humans
Many animals, including bats and moths, may be able to hear and respond to these signals. More research is needed to determine if these are truly cries for help, or simply a reaction to specific stimuli. Brb, apologizing to all my succulents.

The Worldās Most Wearable AI
Limitless is your new superpower - an AI-powered pendant that captures and remembers every conversation, insight, and idea you encounter throughout your day.
Built for tech leaders who need clarity without the clutter, Limitless automatically transcribes and summarizes meetings, identifies speakers, and delivers actionable notes right to your fingertips. Itās securely encrypted, incredibly intuitive, and endlessly efficient.
Order now and reclaim your mental bandwidth today.
*ad

Clickables
š© Is there too much poop on Mt. Everest?
šø Watch robot get good at badminton
𤯠Did this van just beat a Corvette record? (Nürburgring)
𤩠Go stargazing with āCapture the Darkā photo awards

Unnatural Selection
Iām debating keeping this section active. If youād like to continue seeing silly pie charts next week, please vote on this weekās poll below!
Hmmā¦Which glowing plant would be cooler? |

st3v on site
Pseudo-Biolumo

Steve made this in Procreate
st3vās succulent wanted to try on some phosphorescents after reading this weekās stories. Halloween is gonna be so spoOopy!

Nutrition Guidance, Covered by Insurance
Expert nutrition counseling is often expensive, but it doesn't have to be. Most health insurance plans cover sessions with a Registered Dietitian, often at no cost to you. Fay makes it easy to use your benefits by matching you with a top-tier expert in-network with hundreds of plans.
*ad

Claim your sunglasses!
Sharing is caringā¦and also unlocks cool shades š
You currently have 0 referrals, only 3 away from receiving casualSTEM Sunglasses!.

or simply forward this email and tell them to click the āSubscribe Nowā button in the intro! (or this one šļø)
currently available in US only

New to the casualSTEM?
Get the weekly email that explains science in sweatpants. Stay smart for free.
Missed last weekās science in sweatpants?
Catch-up here: š¬Bug Helmets | Pollen Art | Spineless Assassin
I'd love to hear from you!
Reply to this email, I'd love to hear your thoughts and suggestions!
Reply