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Mother bonobos, too, pressure their sons to have grandchildren
If you thought your mother was pushy in her pursuit of grandchildren, wait until you learn about bonobo mothers.
- Mother bonobos have been observed to help their sons find and copulate with mates.
- The mothers accomplish this by leading sons to mates, interfering with other males trying to copulate with females, and helping sons rise in the social hierarchy of the group.
- Why do mother bonobos do this? The "grandmother hypothesis" might hold part of the answer.
Like mother, like monkey.
Bonobo mothers, it turns out, can also be quite pushy in their quest to become grandmothers, according to a new study published in the journal Current Biology. The study describes how male bonobos are more likely to mate if their mothers are living in the group (so living near mom turns out to be a pretty good mating strategy for male bonobos).
The discovery originated among researchers observing bonobos in Africa. They noticed that older females in the group would involve themselves in relationships between male and female bonobos, particularly when it came to mating.
"I just wondered, 'What is it of their business?'" study author Martin Surbeck, Ph.D. told Inverse. "This all made more sense once we found out via genetic analysis that they were mothers of some of the adult males involved."
These would-be bonobo grandmothers push things along by leading their sons toward females in heat, protecting their sons from competing males during copulation, and they "form coalitions with their sons to help them acquire and maintain high dominance rank," the researchers wrote.
The same, however, is not true for chimpanzees. Researchers who observed chimps in Côte d'Ivoire, Tanzania and Uganda found that male chimpanzees whose mothers were present during mating attempts were actually less likely to succeed in having offspring. One possible reason: bonobos live in matriarchal societies while chimpanzees live in groups where all females are subordinate to all males.
"Such maternal behavior is more likely to be effective in bonobos, where the sexes are co-dominant and the highest ranks are consistently occupied by females, than in chimpanzees, where all adult males are dominant over all females," the researchers wrote. "We found that bonobo males with a mother living in the group at the time of the conception were about 3 times (odds ratio: 3.14) more likely to sire offspring than males that did not."
The grandmother hypothesis
One explanation for why female primates experience menopause is called the "grandmother hypothesis". Instead of using precious energy to continually have children of their own, especially given long periods of gestation and child-rearing, aging females may be ahead to encourage their offspring to have children of their own. The researchers aren't exactly sure the grandmother hypothesis explains the pushy-mother behavior within bonobo societies, but it might be part of the story.
"The interesting twist is that in humans, [the hypothesis] was originally thought to happen through support of their daughters, while in bonobos it is through the sons," Surbeck told The Washington Post.
Welcome to the world's newest motorsport: manned multicopter races that exceed speeds of 100 mph.
- Airspeeder is a company that aims to put on high-speed races featuring electric flying vehicles.
- The so-called Speeders are able to fly at speeds of up to 120 mph.
- The motorsport aims to help advance the electric vertical take-off and landing (eVTOL) sector, which could usher in the age of air taxis.
Credit: Airspeeder<p>To prevent crashes, Airspeeder is working with the companies Acronis and Teknov8 to develop "high-speed collision avoidance" systems for its Speeders.</p><p style="margin-left: 20px;">"As they compete, Speeders will utilise cutting-edge LiDAR and Machine Vision technology to ensure close but safe racing, with defined and digitally governed no-fly areas surrounding spectators and officials," Airspeeder wrote in a <a href="https://airspeeder.com/news/2020/9/7/airspeeder-worlds-first-flying-electric-car-racing-series-partners-with-cyber-protection-leader-acronis-34g4k" target="_blank">blog post</a>.</p>
Credit: Airspeeder<p>Beyond motorsports, Airspeeder hopes to help advance the electric vertical take-off and landing (eVTOL) sector. This sector is where companies like <a href="https://www.ainonline.com/aviation-news/business-aviation/2020-01-07/hyundai-and-uber-announce-evtol-air-taxi-partnership" target="_blank">Uber, Hyundai</a>, and Airbus are working to develop air taxis, which could someday take the ridesharing industry into the skies. By 2040, the autonomous urban aircraft industry could be worth $1.5 trillion, according to a <a href="https://www.morganstanley.com/ideas/autonomous-aircraft" target="_blank">2019 report</a> from Morgan Stanley.</p><p>Still, many technical and regulatory hurdles remain. Matt Pearson, Airspeeder's founder and CEO, thinks the futuristic motorsport will help to not only speed up that process, but also pave the way for self-driving cars.</p>
Research reveals a new evolutionary feature that separates humans from other primates.
- Researchers find a new feature of human evolution.
- Humans have evolved to use less water per day than other primates.
- The nose is one of the factors that allows humans to be water efficient.
A model of water turnover for humans and chimpanzees who have similar fat free mass and body water pools.
Credit: Current Biology
Being skeptical isn't just about being contrarian. It's about asking the right questions of ourselves and others to gain understanding.
- It's not always easy to tell the difference between objective truth and what we believe to be true. Separating facts from opinions, according to skeptic Michael Shermer, theoretical physicist Lawrence Krauss, and others, requires research, self-reflection, and time.
- Recognizing your own biases and those of others, avoiding echo chambers, actively seeking out opposing voices, and asking smart, testable questions are a few of the ways that skepticism can be a useful tool for learning and growth.
- As Derren Brown points out, being "skeptical of skepticism" can also lead to interesting revelations and teach us new things about ourselves and our psychology.