Vegans will avoid products containing beeswax and honey because they are animal by products and out of respect for the bees - there is an ethical view that humans are stealing something that isn’t theirs (much like milk).
And, of course, this is all tied into the issue of abuse of bees by unethical bee keepers who put profit before animal welfare.
Planet Ark found that in Sydney alone, 100 million cups of coffee are sold each year, producing 3,000 tonnes (or 3 million kilos) of coffee grounds. 93% of these end up in landfill.
Once there, they decompose and produce methane, a greenhouse gas which is roughly 30 times more potent than carbon dioxide.