The best mobile app for identifying living species is iNaturalist. It is free, fast, and can identify most plants, animals and many fungi. Load it onto your phone, use it to snap a picture, and then its AI will ID it. To date, it can identify 500,000 species. You can then share your observation with iNaturalist’s extensive community of enthusiasts who can confirm, refine, and expand upon what you found. Because you can opt to allow the location of your observation, the app is also contributing to science. (The current app is a newly rewritten version that replaces both iNaturalist Classic and kid-version Seek.) Twenty five years ago I co-founded a non-profit to catalog all the species on the planet and this is the technology that we dreamed about. — KK

River Runner is a website that lets you track a virtual raindrop's journey from any point on Earth to its final destination in the ocean. The 3D visualization is fluid, showing your water droplet flowing through rivers and streams, based on real geographic data. I spent too much time dropping rain on mountaintops and watching it wind through valleys all the way to the ocean. It's especially spectacular when starting from places like Yellowstone National Park, where you can watch the dramatic elevation changes unfold. It’s a perfect companion to John McPhee’s Basin and Range. — MF

I am absolutely enamored by Dawn Chorus, a sound project that collects and maps bird song recordings from all over the world. I relived the first morning I woke up in Berlin to the most charming bird chirps I’ve ever heard. Although I can’t remember the sounds I heard on our road trip through the Czech Republic, this recording perfectly captured the magical landscape I experienced. It’s so refreshing to discover projects like this that induce awe and reverence for the natural world. — CD

I think nature livestreams are the best corner of the Internet. Onlinesafari.tv has almost 100 wildlife cams online from around the world. You can search by type of animal or ecosystem. It’s always soothing to watch animals in their natural habitat. I was watching three bears roughhousing in a pond in Romania earlier. — CD