# Key Points from IRC Log

• HDF5 was mentioned as a useful data format, with one user successfully writing lists of varying lengths to it.

• Discussion of Bitcoin developments including segwit (segregated witness) implementation, with several links shared to Bitcoin Core documentation about costs, upgrade guides, and the 0.13.1 release.

• A conversation about cryonics infrastructure questioned why companies use liquid nitrogen instead of electrical refrigeration, noting concerns about the reliability of manual refilling versus potentially more sustainable electrical solutions powered by solar panels.

• A significant paleontological discovery was shared about remarkably preserved brain tissues in an Early Cretaceous iguanodontian dinosaur, including preservation of meninges (brain membranes) and blood vessels in 133 million-year-old fossils.

• A user shared information about Alfred Lee Loomis, a Wall Street tycoon who President Roosevelt described as second perhaps only to Churchill in facilitating Allied victory in WWII, noting his contributions to science.

• A discussion about aging and evolution touched on the concept of "evolutionary success" and whether aging serves an evolutionary purpose.

• A link was shared about new developments in Rowhammer attacks (a hardware vulnerability affecting computer memory).