Very detailed instructions on how to grow a better tomato plant.
This has most likely been posted here before, but it's incredibly useful.
In April of 1819, British officer John Smith was pursuing a tiger through the jungle outside of Mumbai when he stumbled upon a strange cave entrance hidden in the brush. Something seemed oddly deliberate about the
This is a extremely useful pin which explains different gear systems.
507 Mechanical Movements: Mechanisms and Devices (Dover Science Books): Henry T. Brown: