Forest scientist and Oregon State University alumnus Steve Sillett studies and climbs the largest trees in the world.
Categories
Documenting the Giants
![](https://osu-wams-blogs-uploads.s3.amazonaws.com/blogs.dir/2648/files/2013/01/National-Geo-Pics-1-e1489686906631.jpg)
Forest scientist and Oregon State University alumnus Steve Sillett studies and climbs the largest trees in the world.