High-temperature superconductors are (finally) ready to change the world

Scientific American: The “Woodstock of Physics” Is Finally Living Up to Its Promise

Unlike today’s MRIs, which locate only the hydrogen in your body to map of your innards, future HTS-based machines will allow doctors to image any of the elements in your body. They will image sodium to learn if chemotherapy is successfully killing tumor cells, and oxygen to track glucose metabolism in tumors, offering a safer alternative to PET scans. These machines will reveal the intricate structures of the cell walls of viruses so that scientists can design and deploy molecular missiles to infiltrate them.


Warning for those thinking of upgrading to iOS Twitterrific 6. I’m unable to switch between Twitter accounts (the app locks up in the “choose an account to switch to” dialog). No joy in trying to report it either. Time for a cuppa… Sigh.

Raspberry Pi 4 Now Available!

Raspberry Pi 4 on sale now from $35

Here are the highlights: + A 1.5GHz quad-core 64-bit ARM Cortex-A72 CPU (~3× performance) + 1GB, 2GB, or 4GB of LPDDR4 SDRAM + Full-throughput Gigabit Ethernet + Dual-band 802.11ac wireless networking + Bluetooth 5.0 + Two USB 3.0 and two USB 2.0 ports + Dual monitor support, at resolutions up to 4K + VideoCore VI graphics, supporting OpenGL ES 3.x + 4Kp60 hardware decode of HEVC video + Complete compatibility with earlier Raspberry Pi products

We had a nice 3 hour hike out to the river valley this afternoon followed by dinner and now a couple of bites of dark chocolate and a mug of Barren Grounds (Yellowknife, YK) Aeropresse-brewed coffee. Is this not what weekends are for? 🙂

A respectful, slightly left-leaning Canadian political consultant interviews a respected American political commentator about the state of politics.

The Herle Burly podcast: George Will


The ice breakers are headed north! Two weeks earlier than normal.

The strong westerly winds pushed the ice out of the local bay today. The deep blue water looked beautiful.