Наука На Чердаке | United States America (US)

Create: 2024-04-05 Update: 2024-05-02 12:41:37

История, леденящая кровь: оказывается, каннибализм среди птенцов удодов в порядке вещей! А вроде бы птичка такая красивая. Дело вот в чем. Большое количество яиц/икринок/других сущностей, из которых рождаются новые организмы, во внешнюю среду откладывают виды, не заботящиеся о потомстве, дескать, кто-нибудь да выживет. Виды, для которых характерна забота о потомстве, как правило, за один раз производят на свет небольшое число детенышей. Но удоды в этом отношении ведут себя странно: с одной стороны, они откладывают много яиц, но, с другой стороны, заботятся о потомстве. Как разрешить этот парадокс? Если самка хорошо питается, то она откладывает много яиц, при этом прокормить столь большой выводок оказывается невозможным. Зачем тогда это нужно? Ответ очень циничный: младшие птенцы служат дополнительным пищевым ресурсом для старших птенцов, которые и поедают своих младших братьев и сестер. Жестоко, очень жестоко, но надежно.

Наука На Чердаке

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Telegram and Signal Havens for Right-Wing Extremists

Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.

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