Hi. I need to know why my bonsai's needle are turning brown. I have a small juniper bonsai and I just got it a few days ago. I put my bonsai outdoor only a few hours everyday because it's -2 degrees Celsius and there might be squirrels eating my bonsai. I bring it indoor at night. Do I need to remove the brown needles? Is my bonsai healthy? Please help! Thanks.

Brown needles means dead tree. You killed it by fuzzing around with it. Junipers belongs outdoors where nights naturally is colder than days. Room temperature at night and winter temperatures at day was totally confusing for the tree which did not have any natural strategy to cope.