Virtually every sector of the global economy, from manufacturing to agriculture to transportation to power production, contributes greenhouse gases to the atmosphere, so all of them must evolve away ...

Before getting started with telegram-files, you should apply a telegram api id and hash. You can apply for it on the Telegram API page.

I use FFM to interact with SDL in java game engine. Native version performs about 20 times slower than on the same JVM (400 -> 25 fps drop). I suspect inefficient implementation of native calls.