It is commonly assumed that because males produce many, tiny sperm, they are cheap to produce. Recent work, however, suggests that sperm production is not cost-free. If sperm are costly to produce, ...
16don MSN
Cockroaches become more cautious and change their behaviour after stress, scientists discover
Cockroaches are commonly seen as simple organisms that act without hesitation, guided by instinct rather than experience. New laboratory research from Scotland reveals that the picture is less fixed.
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