Roraima em Marte! uma solução medieval salvadora, o começo do universo, bitcoin paraguaio

The medieval Dutch solution to flooding

A solução da Europa medieval contra enchentes que salva vidas até hoje

Those aren’t stars – they’re black holes

A Giant Asteroid Bigger Than The Empire State Building Is About to Zip Past Earth

How Did The Big Bang Arise Out of Nothing?

400,000+ Sound Recordings Made Before 1923 Have Entered the Public Domain

Hear the First Jazz Record, Which Launched the Jazz Age: “Livery Stable Blues” (1917)

Nobody Is Stepping Up at Twitter

How one of South America’s biggest dams became a Bitcoin battleground

Sols 3347-3348: Bem Vindo a Roraima!

The surprising math of cities and corporations

Sync your calendar with the solar system

The Weirdest Eyes in The Animal Kingdom See a World We Can’t Imagine

radinho no telegram:

minha lojinha no Colab55 (posters, camisetas, adesivos, sacolas):

meu livro novo na lojinha! blue notes

meu livro solo

o adesivo do radinho!!!

minha lojinha no ko-fi:

muito obrigado pelos cafés!!!