Dear diary, I'm so excited! Next week, the Ökofete is taking place in Leipzig. It's a huge festival focusing on climate, the environment, and sustainability ...

The other day, Dad, Mika and I climbed the observation tower at Cospudener Lake on a mild spring evening and watched a really great sunset...

It was quite warm in Germany last week, so Mika and I went outside a lot and made the most out of the good weather. We noticed that when you look at the streets, the air above them shimmers! It’s as if the street is getting a bit dizzy from the heat.

Last week, Mika and I were on vacation in Finland. When it got dark in the evening, we sat down by a large lake in the middle of the forest to look at the stars. And then it suddenly happened: The sky started to glow.

It was good weather today, so Mika and I decided to take a walk in the nearby garden. After a long walk, we were just lying on the grass, watching the sky...

It rained all day today. Nevertheless, I wanted to play outside with Mika. So I put on my rain jacket and we went outside and jumped from puddle to puddle. It was really fun.

Today Mika and I wanted to play outside , but then we saw that the sky was completely dark, even though it was still the middle of the day. There were really dark grey and even black clouds in the sky.

I'm so excited that it's finally winter and it will soon be snowing. Earlier, I was thinking about the snowman that Mika and I built last year.

Mika and I are currently visiting (AC)³ researcher Sofie Tiedeck at the Alfred Wegener Institute in Potsdam.

Today I went to the playground with Mika. It was great fun. First we went on the swings, then we had a few goes on the roundabout.