https://padlet.com/1asliao/m7x4ef2681uc1rax Observation: I notice the sky is covered with smoke, no body hanging at the park long. Trees in the front of our house and no cars parking in front of us. And we can't open the windows or doors to let some fresh air in. Question: How could smoke linger in the atmosphere for a long time. Inference: I have heard about previous wildfires before and it wasn't as severe as the one we are in now. en-us 2020-09-16 19:22:25 UTC 2024-07-24 11:50:14 UTC hello@padlet.com 1asliao https://padlet.com/1asliao/m7x4ef2681uc1rax/wish/753055571 2020-09-16 19:37:40 UTC https://padlet.com/1asliao/m7x4ef2681uc1rax/wish/753055571