There's plenty of discussion about climate change and greenhouse gas emissions, but are we ready to actually do something substantive about reducing those emissions? (michiganradio.org)
Meaning that a student can not think critically if they don't have something substantive about which to think. (nextgenlearning.org)
When you're starting a campaign, make sure that your content is going to be worth the effort — reward those poor suffering readers and activists with something substantive. (epolitics.com)