Amazon has sent a cease-and-desist letter accusing Perplexity AI of using its Comet browser agent to make purchases on Amazon without authorization, prompting Perplexity to fire back with a public statement alleging bullying and intimidation from the e-commerce juggernaut.

Brazilian President Luiz Inácio Lula da Silva on Tuesday put forward his vision for how the Amazon rainforest should be protected, a future that didn't depend on donations from wealthy nations and large philanthropies but instead included a major fund that paid countries to keep forests standing.

The Amazon Fire TV Stick 4K Max is down to $34.99 with code 4KMAX, down from the normal price of $59.99. That's a 42% discount.