I was looking at a map of verified impact craters in the world and most were in Europe and North America. Is it because there truly are more happening in this zone , or is it in part that other parts of the world haven't had the same plethora of geologic surveys? Apologies if I used the wrong flair,

Are there differences between humans from 300,000 years ago and nowadays? Were they stronger, more athletic or faster back then? What about height? Has our intelligence remained unchanged or has it improved?

I often see people complaining that beans or broccoli or whatever causes gas. I personally have not noticed more farts when I eat some specific food. Is there any science behind the notion that certain foods produce more gas?

How do labs and the vaccine developers get the NEW 2025 RELEASE VERSION of the virus, where do they source it from?

Hi Reddit! I am a Professor and Chair of the University of Maryland Department of Entomology. My research combines traditional field and collections-based approaches with emerging technologies in informatics, imaging, sequencing and data science to explore global biodiversity. Much of our work has been on ants, which I find to be wonderfully complex little creatures where evolution’s inventiveness is on full display. Our work includes biodiversity discovery (for example "dragon" ants), unraveling the evolution of complex traits such as the mousetrap-like jaws of "trap-jaw" ants, and reconstructing a global map of ant diversity. A particular focus has been imaging with micro-computed tomography, which gives us rich 3D models to analyze evolution and we have a gallery of models online you can check out.

Bio: Evan Economo is a biologist with broad interests in the ecology and evolution of biodiversity, and how biodiversity intersects with technology and sustainability. He was born in Montreal and grew up in Virginia and North Carolina before pursuing undergraduate work at the University of Arizona and graduate work at the University of Texas at Austin. He previously led the Biodiversity and Biocomplexity Unit (Arilab) at the Okinawa Institute of Science and Technology. From 2019-2022, he served as Associate Ombudsperson, and from 2023-2024, he was the Dean of Faculty Affairs at OIST. Evan joined the University of Maryland as Professor and Department Chair in 2024, while remaining Adjunct Professor at OIST.

I'll be on from 1:30 to 3:30 p.m. ET (18:30-20:30 UT) - ask me anything!

Other links:

• Lab website
• Google Scholar page
• Evan Economo Joins UMD to Chair the Department of Entomology (July 2024)

Username: u/umd-science

https://preview.redd.it/9dq50wopbx1e1.png?width=2500&format=png&auto=webp&s=cb5f1b93c0e7e4d01dd3f3a5ea41d11d74702d37

The most obvious example that comes to mind is that mules— the offspring of a male donkey and female horse— are physically and behaviorally totally different than hinnies, which are the offspring of a male horse and a female donkey.

Ligers are also distinct from tigons, and so on.

So kind of a couple of related questions:

-Biologically, what causes the hybrid to be different based on which parent is which?

-Why does this seem to apply to some hybrids but not others? (Coywolves and beefalo seem to be the same either way?)

-Does this happen with birds and reptiles, or only mammals?

One can connect a battery's anode to the ground and then connect a wire to the ground (lightbulb) which leads back to the cathode of the battery and it works - why, doesn't earth need to be positively charged for that to be possible?

Apparently earth is neutral but wouldn't even 1 ecxcess electron mean that it can't accept anymore electrons?

We are researchers Pascal Badiou, Ph.D. and Samuel Robinson, Ph.D. from Canada's leading wetland conservation organization, Ducks Unlimited Canada. We use our expertise to help further DUC's science-centred mission of conserving and restoring Canada’s wetlands to protect biodiversity and support the well-being of humans, waterfowl and other wildlife.

As the world has its eyes on biodiversity , we're here to answer your questions about wetland biodiversity, ecology, and generally, anything you want to know about wetlands.

Pascal Badiou
Research Scientist -- Institute for Wetland and Waterfowl Research
Ducks Unlimited Canada
I joined the Institute for Wetland and Waterfowl Research (IWWR) in 2006. My research focuses on the ecology of wetlands and large shallow lakes. I'm particularly interested in the role wetland restoration and conservation can play in regulating water quality and quantity in agricultural watersheds of the Canadian Prairies. I'm also interested in how the interaction of multiple stressors, such as invasive species, increased nutrient loading, pesticides, and climate change, affect wetland ecosystems.

Samuel Robinson, Ph.D.
Research Scientist -- Institute for Wetland and Waterfowl Research
Ducks Unlimited Canada New to the IWWR team as of 2024, I am working on improving knowledge of agricultural ecosystem services, while identifying practices that benefit both agriculture and biodiversity. Originally from the West Coast, my work has taken me everywhere from Carnation Creek, BC, to Ellesmere Island, NU, to Lethbridge, AB, and more recently, to the Ducks Unlimited Canada headquarters in Oak Hammock Marsh, MB. I bring ecological, agricultural, and analytical experience to the IWWR team, which I will use to help develop regionally specific sustainable agricultural practices that will be beneficial to both farmers and wildlife.

Additionally, our colleague from IWWR, James Paterson recently represented the Institute for Wetland and Waterfowl Research at the COP16 biodiversity conference in Cali Colombia, and will soon be presenting a webinar on biodiversity and COP16 takeaways, alongside Ducks Unlimited Canada's national policy analyst, Gia Paola on November 28th, 2024.

You can register for that webinar now to learn even more about how Ducks Unlimited Canada is working to support biodiversity.

If our work strikes a chord with you, we'd be thrilled to have you join Ducks Unlimited Canada as a member. Your support will help fund the research we conduct at the Institute for Wetland and Waterfowl Research and the science-based conservation and restoration projects Ducks Unlimited Canada undertakes in pursuit of its mission.

We'll be on at 12pm Eastern time, ask us anything!

Further reading:

• New perspectives on temperate inland wetlands as natural climate solutions under different CO2-equivalent metrics Shizhou Ma, Irena F. Creed & Pascal Badiou Published in: npj Climate and Atmospheric Science 7, Article number: 222 (2024)
• Nutrient retention of newly restored wetlands receiving agricultural runoff in a temperate region of North America Bryan Page, Pascal Badiou, Owen Steele Published in: Ecological Engineering, Volume 195, October 2023, 107060

Username: u/DucksUnlimitedCanada

https://preview.redd.it/yi1gtnft6l1e1.jpg?width=4032&format=pjpg&auto=webp&s=931aaa05285bae7aed9982ecfd59f0f8e4998d95

Now I maybe wrong, but from my understanding basic solution tend to dissolve organic mater better. Contrary to this information, I haven't heard shit about a specie that uses high PH for digestion. Is it a material issue, is it because any really producible compound doesn't have an easy way of counter balancing the digestive properties, or am I just being stupid. Thank you in advance.

I googled the basics, that to avoid turbulence wind turbines should be placed at least 5 rotor distances apart...

But I'd like to know more about the physics involved, like the envelope of that turbulence; perhaps there's some sort of anti-turbulence structure that can be placed between towers to pack them more densely or IDK

In this space.com article, astronaut Suni Williams was quoted as saying, "I'm the same weight that I was when I got up here.". With the absence of gravity, what method do they use to accurately measure weight in space?

Thanks in advance for any/all enlightenment.

If scents are clouds of aerosolized molecules (at least that’s what I think they are), then how do they behave in zero gravity?

Do they disperse? Do they agglomerate into static clouds that just hang out? What?

trying to google this and the only results say how thick it would be if hypothetically compressed into pure ozone at ground level (3mm), but im curious how thick it is while in the sky. i know its not dense at all, but on average where does the layer start and end?

The Mediterranean basin mostly dried out and later reflooded. When dry, it would have formed an enormous basin reaching far below sea level.

Are there other cases in the geological record where we suspect something similar happened to form large dry basins below sea level? Are any suspected to have been bigger in extent?

Take two parallel wires with current in both wires flowing in the same direction. Eschewing a mathematical treatment, simply apply the right hand rule. The magnetic field lines between the wires will be in opposing directions and, if I understand correctly, cancel out. Push the wires together in a coil and apparently the magnetic fields constructively interfere, creating a magnet out of the coil with a north pole and south pole at the coil terminals. How do we account for this? What am I misunderstanding?

I have three trains (X, Y and Z) of equal proportions on separate parallel tracks in space. Each train is equipped with measurement tools to keep track of the speed, length and direction of the other trains.
Train X stands still while Train Y goes with 50% light speed in one direction while Train Z goes with 50% light speed in the opposite direction. How fast is Train Y relative to Train Z? What would happen when we add even more speed to each train? (Train X is just an anchor point)

Common sense would say 0.5c+0.5c=1.0c but then 0.6c+0.6c=1.2c and that's impossible, is it?

I understand the general make up of baryons. 3 valence quarks, each of a different color, plus a bunch of quark-antiquark pairs and gluons, the sea of quarks. But, just how many sea quarks are there? I've been looking around I've seen answers ranginf anywhere from a handful to like a googol.

So do we have any approximation at all? How many do physics equations allow for? And if we have no clue, why not?

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science

Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...".

Asking Questions:

Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists.

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I saw the US East Coast drought is caused by a shift in the jet stream out over the Pacific Ocean and there was a beautiful animated model forecast of it. But how is it measured? Weather balloons? Radar?