Twitter is a treasure trove for news. These tweets caught our eye at NSTA recently, and they could surely be useful conversation starters in the classroom. Read on, and share the stories that caught your eye this week!

1. Kids love chasing fireflies, and scientists have been chasing the secret to how they glow for 60 years.

How do fireflies glow? Mystery solved after 60 years: http://t.co/ubgknu0xs8

— National Geographic (@NatGeo) July 24, 2015

2. Ice cream dates back to biblical times!

Did you know ice cream dates back to biblical times? #PBSIceCreamWeek (via @PBSFood): http://t.co/CzbatTIecH

— PBS Teachers (@pbsteachers) July 25, 2015

3. Returning humans to the moon could cost 90% less than expected, bringing estimated costs down to $10 billion.

Looks like colonizing the moon could be 90 percent cheaper than we thought http://t.co/426qm7Ajxh pic.twitter.com/ZB0ALHIXgu

— Popular Science (@PopSci) July 25, 2015

4. CRISPR. All the cool kids are talking about it, and here’s why:

CRISPR has “promised direct assess to the source code of life.” Your Saturday #longread, from @Wired: http://t.co/nkxvRSX1jx

— NOVA (@novapbs) July 25, 2015

5. A major earthquake will cause plenty of destruction along the West Coast, but it won’t look like it does in the movies.

What will really happen when San Andreas unleashes the big one? http://t.co/C00GW99dzP pic.twitter.com/BEzoQUyNH0

— Ask Smithsonian (@AskSmithsonian) May 29, 2015

6. Restless, wandering minds are capable of enormous creativity.

Are you bored? Guess what, that’s a good thing because you’ll be more creative. http://t.co/QBKo8RrgQa

— Ainissa Ramirez (@ainissaramirez) July 25, 2015

7. Astronaut Scott Kelly is craving a Philly cheese steak. (Isn’t everyone?)

#Goodmorning #Philadelphia! One of your cheese steaks would be great 4 months into my #YearInSpace pic.twitter.com/IQ9HjZcInV

— Scott Kelly (@StationCDRKelly) July 25, 2015

 The mission of NSTA is to promote excellence and innovation in science teaching and learning for all. Follow @NSTA on Twitter to see more stories like these and get the science education resources you need.