When combining two complete sentences with a conjunction ("and," "but," "or," "for," or "yet"), precede the conjunction with a comma. Example: Still, the sun is slowly getting brighter and hotter, and ...

Simple sentences are important for making clear points. Be careful though - if you only ever use simple sentences in your writing you don ... They don’t make complete sense on their own.

Below is a video on the five key princples for writing clear, easy to understand sentences -- principles that work no matter how complex the material or how technical the science. Follow these ...