A new Science study presents a method for #3Dprinting nanoscale optical-grade glass at 650°C—roughly 500°C lower than the sinter temperatures needed by other methods.
The approach may help redefine the paradigm for free-form manufacturing of silica glass. https://t.co/5QzgEMjZYK
In a catastrophic instant some 66 million years ago, a six-mile-wide space rock slammed into the Earth, leading to the extinction of three quarters of all species.
But that might not be the whole story https://t.co/Hr2DRGspDp
When an OP (or ad) on how pre-prepared lessons will solve the teacher shortage (it won’t) is from someone who sells pre-prepared lessons. 🤔 Unless it’s increasing pay for all teachers and increasing planning time, it is nothing more than window dressing. #MoreThanThanks
If we take a sense of universal altruism seriously, where is there room to have enemies? Our real enemies and the enemies of humanity are negative emotions like anger and hatred. Indeed, people who are dominated by powerful negative emotions should be objects of our compassion.
Dr Sham Nair shares #TIMSS results at #STAK10Conference2021 “always room for improvement but in a good place” We are in the top second tier. @ScienceNESA @mshepherd11
Betsy DeVos has never done her job to help America’s students. It doesn’t surprise me one bit that she’d rather quit than do her job to help invoke the 25th Amendment.
Good riddance, Betsy. You were the worst Secretary of Education ever. https://t.co/im1IgGQVSp