It's a good time to be a healthcare or biotech startup. In the first half of 2018, healthcare startups raised $15 billion in funding, the most raised in the first half of the year in the last decade, according to Forbes. By July, a new crop of unicorns — startups with valuations over $1 billion — were born, while others increased their already billion-dollar valuations. From companies harnessing the plant microbiome to buzzy biotechs working on cutting-edge technology, here are the US and United Kingdom-based unicorns to keep an eye on for the rest of 2018, according to data from PitchBook.