Serendip is an independent site partnering with faculty at multiple colleges and universities around the world. Happy exploring!
Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
sundry observations
Good compilation of materials on genetic engineering at http://topics.nytimes.com/top/news/science/topics/genetic_engineering/index.html.
See here for caffeine content of various drinks (source of data described here).
The pros and cons of biofuels (one of many, similarities/differences?)