When somebody sends you a document as an attachment, don't just open it. Use the free tool Dangerzone to scrub it clean of ...

Converting sugarcane waste to biofuel could become more environmentally friendly and cost-effective, thanks to a joint ...

This will take a few minutes. Attention: the generated file has a size of approx. 12 GB, so make sure to have enough diskspace. If you're running the challenge with a non-Java language, there's a ...