What kind of chemical do we release when we help others?

Helping others triggers impacts to our brain in many positive ways. When we help others, our brains release oxytocin, serotonin and dopamine. These hormones have the effect of boosting our mood and counteract the effect of cortisol (the stress hormone).

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.