494K views · 349 reactions | See how scientists are using non-invasive techniques like motion operated cameras and environmental DNA to uncover vital data about the source waters of the Okavango Delta. | National Geographic History | Facebook

20M views · 1M reactions | We are in disbelief folks. Just 2 months ago we reached 10,000 followers on Instagram and now we are over 75,000 followers on the social media app! In this video, Howard letterpress prints the big announcement. We hope this headline leaves a good impression! Thank you all so much for your support! #followersinstagram #instagram #sacramento #letterpress #printing | Sacramento History Museum | Facebook