web analytics

2018.07.29 Moscas and avispas

This a hive, not a beehive, but a hive for wasps. In Spain, wasps are called avispas. The wasps in the picture look different from those that visit the pool. The ‘pool wasps’ are bigger and have tails. Bees and wasps have important functions in nature. They eat other less useful animals and inseminate flowers … Read more

2018.05.22 Thanks to Wikipedia

For the last couple of years, I used to organize colleges for city council clerks at the university in Amsterdam. During one of the colleges, the ‘age of speciation’ of humans came up: ‘roughly 300.000 years ago.’ One of the clerks countered this. According to his belief, it could only have been between 5.000 to … Read more