Welcome to the 61st Daily Field Note! Here you find the top post of the day, one covering each scientific field that is included by Geopolis. Since these authors put a lot of effort in writing a good post they surely deserve the extra exposure.

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Science quote of the day:
"Never memorize something that you can look up." ~ Albert Einstein

Geology: Hawaiian volcanoes - Part 3: A growing volcano

Original post by @sooflauschig

Hello Everyone, In today's part I will to talk about the growth and composition of Hawaiian volcanoes. This begins with the observations we can make on land. Walking across the Islands of Hawaii, geologist noticed that the lower parts of Hawaiian volcanoes consist of relatively thin lava flows that tend to weather to a red-brown color. The upper parts, on the other hand, consist of fewer, but thicker, lava flows that typically weather to a light grey or white color. The deposition of soil layers between the uppermost thin flows and the lowermost thick flows indicate that some time must have passed in between those two eruption styles.

Ecology: A new count of the vaquita (Phocoena sinus) reveals that there are most likely only 12 individuals left!

Original post by @valth

About a year ago, I wrote a post about how the vaquita might be the next marine animal to go extinct, and it seems that my prediction might be coming true. Last year The International Committee for the Recovery of the Vaquita did a count of how many vaquitas that were still alive, and they found there to be 30 individuals left in the wild, but this year's number is a whole lot lower.

So, what exactly is a vaquita? Before we get into the conservation talk about the vaquita, you will probably want to know what exactly is it. The vaquita is a species of porpoise (Family Phocoenidae), a type ...

History: France: Becoming a Nation in the Middle Ages

Original post by @ravenruis

France was becoming more and more clearly defined as a nation after the Hundred Years War. The Ancien Régime was being replaced by a more centralised structure of rule, through the monarchy, but the integration of territories into a centralised system was a slow and fractured process. For a long time it remained an area of social, economic, linguistic and governance diversity. There was more resistance to the prospect of integration by the people in some territories, and less resistance in others. Some territories merged into the new 'main' territory of France more quickly than others. This process of integration and absorption into one solid nation involved asserting one dominant system ...

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