TeX4PPT and TeXpoint. It's much more professional but it is not for free except for a one-month trial.
If you prefer knit clothing over latex, there are five relevant blogs:
Climate science isn’t political. Lying about it is. (Synopsis) - “There are now dozens of hockey sticks and the all come to the same basic conclusion. The recent warming does appear to be unprecedented as far bas as we c...
19 hours ago