 Harry Harrison's best-known book was first serialized in Astounding magazine in 1960. It's about the planet Pyrus, which is rich in mineral resources and also teaming with life. Every animal and every plant is carnivorous and will kill humans on site. Everything is radioactive. There are earthquakes and volcanoes everywhere, severe weather. It's a nightmare, but there's a small human colony there that's determined to take advantage of the mining potential there. They live behind massive walls that are under constant assault by waves of screaming animals and plants. And visiting Pyrus requires a great deal of training and a specialized environment suit because in addition to everything else, the gravity is twice earth normal. The Death World series are not great literature to be sure, but they are fun and memorable. You can support 30 Seconds Sci-Fi and my other projects by becoming a patron. There's a link in the description below. And visit the 30 Seconds Sci-Fi Tumblr, that's my headquarters. In addition to my videos, I publish links and updates there every day.