Foretry is probably the best way of capturing carbon straight out of the air.

"[...] Need somewhere around 50 acres' worth of trees, planted in tropical areas, to absorb the typical emissions produced by an average American in her lifetime. Multiply that by the population of the U.S. and you get 25 million square miles, roughly half the landmass of the world." -- How to Avoid a Climate Disaster, Bill Gates

Pihole is definitely the best thing that happened to my broadband connection. I would argue it was even better than the coaxcable->fiber upgrade.

it speeds up the network?

Yup. Thats one of the things I remember most vividly from my trip to NY as a kid in the 90s.