dirai00

【速報】 サル山に新しい命が誕生しました！ 本日朝、ニホンザル担当飼育員が出産を確認しました。 赤ちゃん、しっかりと母ザルのお腹につかまっています！ 今後改めて情報発信します。 なおサル山ご観覧の際は、母子のストレスに配慮し、 これまで以上にお静かにお願いします。 #市川市動植物園

You can smell rain better than a shark can smell blood. 200,000 times better. Your nose picks up the compound behind petrichor (that smell after rain) at levels so tiny it's like finding one teaspoon spilled across 200 Olympic swimming pools. That compound is called geosmin. It comes from soil bacteria. And the word "petrichor" itself didn't exist until 1964, when two Australian scientists, Isabel Joy Bear and Richard Thomas, published a paper in Nature trying to figure out why rocks smell after rain. They took the Greek words for stone and "the blood of the gods" and stuck them together. Blood of the stone. When soil stays dry for weeks, certain plants leak an oil that the clay soaks up like a sponge. At the same time, soil bacteria called Streptomyces start making spores (tiny survival pods that can sprout into new bacteria later) and give off geosmin while they do it. The smell just sits there in the dirt, waiting. Then rain hits. A 2015 MIT paper figured out the physics of what happens next. Raindrops land on dry soil and trap tiny air bubbles in the soil's pores. The bubbles rise up through the raindrop and pop out the top, flinging thousands of tiny droplets into the air. Each one carries a piece of the oil, some bacterial spores, and some geosmin. Wind does the rest. Light rain releases the most of these droplets. Heavy rain releases very few, which is why a drizzle smells more than a downpour. MIT estimated that rain across the planet throws between 10,000 and 800,000 trillion bacterial cells into the air every single year. In 2020, scientists in Sweden and the UK published a paper in Nature Microbiology that explained why this smell exists at all. Streptomyces bacteria only release geosmin when they're about to die and make spores. The smell is a bacterial ad. It attracts tiny 1.5mm bugs called springtails, which eat the bacteria. Springtails have evolved enzymes that let them survive the antibiotics Streptomyces produce to kill everything else. In exchange, the bacterial spores pass through the springtail's gut alive and stick to its body, hitching a ride to new soil. This deal has been running for about 400 million years. Same molecule, different stories. Geosmin is why raw beets taste like dirt. It's why catfish and tilapia taste muddy when raised in bad water. Acid breaks it down, which is why every recipe for muddy fish starts with vinegar or lemon juice. Your nose catches all of this at parts-per-trillion. You're smelling a 400-million-year-old conversation between soil bacteria and the bugs that eat them.

White Sox fans, I’m sorry. Munetaka Murakami is playing his heart out to be a Dodger in 2 years. Seventh homer of the year. In the books.

ちゃんとノーパンで来たんだろうな

｢みいちゃんと山田さん｣の、みいちゃんのような発達障害、知的障害、境界知能の女は、容姿が良いことが多い。 理由は、脳がそうなのに容姿まで悪かったら、遺伝子を残せないからだ。 容姿が良ければ、健常者の男が養ってくれるため、遺伝子も残せるし、なんとか暮らせる。