<blockquote class="twitter-tweet" data-lang="ja"><p lang="en" dir="ltr">🏆📈🏆 414.84 ppm <a href="https://twitter.com/hashtag/CO2?src=hash&ref_src=twsrc%5Etfw">#CO2</a> in Earth’s atmosphere on March 18, 2019 🏵️🏵️ HIGHEST daily average EVER at the Mauna Loa Observatory 🏵️🏵️ </p></blockquote>