Eurasia’s biogeographical advantages
2025-04-04 12:53 Before the current human species Eurasia was inhabited by other species.  So it had been for more than 1.5 million years.  This has given organisms some opportunity to adapt to humans.
Africa’s biogeographical disadvantages
2025-03-27 19:56 When I talk here about Africa I mean Sub-Saharan Africa.  Historically the Sahara has consisted a greater barrier than the Mediterranean.  Most from Africa’s north coast are more similar to Europeans than people south of the Sahara.
The basics of biogeography
2025-03-14 12:38 At the time of the extinction of the dinosaurs the world was already divided into continents.  Antarctica and Australia were still connected.  However, we don’t know much about the organisms of the time in Antarctica.
The ice ages’ effects on geography
2024-11-27 13:56 One should not overestimate how much geography has changed during the human era.  The largest differences are caused by the ice ages.  The three last in particular I find interesting.  Not only were they particularly cold.
The origin of human language
2024-09-29 15:54 Some imagine “cavemen” with a very limited language.  If they talk at all people imagine pidgin.  The present-day human species have never talked like that when people spoke their mother tongue.
The origin of humanity
2024-09-27 14:40 I know people don’t like being grouped with monkeys.  However, purely biologically we are.  Our genus (Homo) have only had one species (Homo sapiens) since at least the end of the last ice age.
Famous prehistoric mammals
2024-09-09 13:04 After the Cretaceous–Paleogene mass-extinction it took 15 million years for the world to recover.  Mammals and birds then evolved to take over the role of the dinosaurs.  Towards the end whales arose too take over after the plesiosaurs.
On the Cretaceous–Paleogene mass-extinction
2024-09-02 12:16 The world looked a bit differently 66 million years ago.  Pangaea had splintered into Africa, Antarctica, Australia, Eurasia, North America and South America.  Antarctica was connected to Australia, and Eurasia to North America.
Contemporary with the dinosaurs
2024-08-29 12:25 Plants has changed much since the time of the dinosaurs.  However, not so very much as many imagine.  Mosses, lycophytes and ferns existed long before the dinosaurs.
Real dinosaurs
2024-08-17 19:29 Some perceive dinosaurs as entertainment for children.  Dinosaurs are actually subject to scientific investigation.  As they are described today they make sense to me.  They make as much sense as platypuses, kangaroos and bats.