User uhoh

3

35

votes

2

answers

9k

views

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

photosynthesis

Sep 9 at 16:56 Alex Reynolds 1,536

4

35

votes

2

answers

3k

views

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

May 25 '18 at 0:26 tsttst 1,115

3

25

votes

1

answer

3k

views

Bird brain-eating Mantis - how does it crack the skull?

entomology predation

Sep 24 '17 at 13:01 uhoh 1,773

4

21

votes

1

answer

3k

views

How did the largest/longest dinosaurs hold their head and necks up?

muscles bio-mechanics dinosaurs

Aug 10 '17 at 18:08 iayork 11.5k

2

14

votes

1

answer

10k

views

Can plants produce oxygen at night (without light)?

biochemistry plant-physiology photosynthesis

May 9 '18 at 8:24 Community♦ 1

4

13

votes

1

answer

630

views

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

botany plant-physiology photosynthesis light

Jul 22 '17 at 6:31 Emily G. Silvia 1

10

votes

1

answer

427

views

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

species-identification trees morphology

Dec 11 '17 at 18:26 Bryan Hanson 997

9

votes

1

answer

136

views

What are the sources of molecular hydrogen in human breath?

biochemistry respiration breathing

Mar 25 at 11:30 uhoh 1,773

8

votes

2

answers

238

views

What are these four large snails doing?

behaviour gastropod

Mar 11 at 15:22 Dr. Evenor 458

7

votes

1

answer

207

views

What kind of big bird is this seen walking around Taipei?

species-identification ornithology

Jun 14 '18 at 14:12 Johnny 1,224

1

6

votes

1

answer

2k

views

Species identification; clusters of big plump red bugs in Taipei

species-identification zoology entomology

1d ago theforestecologist♦ 18.9k

1

6

votes

2

answers

2k

views

What causes “ear rumbling”?

physiology hearing human-ear

Aug 10 at 1:46 Bibi 1

2

6

votes

1

answer

207

views

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

molecular-biology radiation telomere

Apr 19 at 1:49 Alex Reynolds 1,536

6

votes

1

answer

118

views

Is this a hawk, or an eagle?

species-identification ornithology

Jul 4 '18 at 13:51 Community♦ 1

1

6

votes

2

answers

468

views

Why do soil bacteria produce nitrous oxide as a result of anhydrous ammonia fertilizer application?

bacteriology soil nitrogen-cycle

Oct 11 '17 at 17:09 Istrel 186

6

votes

3

answers

220

views

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

biochemistry dna dna-sequencing safety

Jul 20 '17 at 7:23 uhoh 1,773

1

6

votes

1

answer

101

views

Don't understand figures in this citizen-science mosquito ID project

entomology statistics data infectious-diseases

May 19 '17 at 0:15 canadianer 15.3k

6

votes

1

answer

750

views

Are four-leaf clovers mutations, developmental errors, or something more complicated?

genetics botany mutations variant

Mar 31 '17 at 14:46 uhoh 1,773

3

6

votes

2

answers

308

views

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

biochemistry bacteriology chemosynthesis

Feb 25 '17 at 9:41 another 'Homo sapien' 13.1k

5

votes

1

answer

67

views

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

species-identification botany fruit

1d ago Bryan Hanson 997

1

5

votes

0

answers

61

views

How much energy does a spider expend per day just waiting for its web to vibrate?

entomology metabolism arachnology energy-metabolism

Aug 18 at 13:18 uhoh 1,773

5

votes

0

answers

169

views

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

human-eye uv melanin

Aug 25 '18 at 15:26 samuel owino 101

5

votes

2

answers

224

views

Melatonin production, sleep, and “cyan light”; how might this finding be possible?

human-biology neuroscience vision sleep color

Aug 3 '18 at 20:12 De Novo 7,457

2

5

votes

1

answer

102

views

What are these little leaves growing on these other leaves? (plant growing near the ocean)

species-identification reproduction seeds

May 20 '18 at 13:04 NatWH 876

1

4

votes

1

answer

58

views

Is it unusual for populations of archaea to be found living inside trees?

microbiology trees dendrology archaea

Jun 17 at 16:52 WYSIWYG 32.8k

4

votes

2

answers

147

views

Do these large spiders in Taiwan belong to different species?

species-identification arachnology

Apr 19 at 1:54 uhoh 1,773

4

votes

1

answer

300

views

How exactly do birds get drunk eating fruit? Fermentation should be anaerobic

ornithology behaviour fermentation

Jan 22 at 3:04 Bryan Krause♦ 21.3k

4

votes

1

answer

136

views

Is this tall, white tree in central Australia a kind of Eucalyptus?

species-identification

Nov 12 at 22:09 Aussie Paul 19

1

4

votes

1

answer

133

views

Why are “itch signals” transmitted so slowly from the skin to the human brain?

neuroscience neurophysiology central-nervous-system peripheral-nervous-system

Nov 22 '17 at 4:37 theforestecologist♦ 18.9k

3

votes

0

answers

56

views

What does “dissection-based microscopy” mean as described here, and how can it give genetic information?

genetics terminology microscopy

Aug 10 at 7:32 uhoh 1,773

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71 Questions

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

Bird brain-eating Mantis - how does it crack the skull?

How did the largest/longest dinosaurs hold their head and necks up?

Can plants produce oxygen at night (without light)?

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

What are the sources of molecular hydrogen in human breath?

What are these four large snails doing?

What kind of big bird is this seen walking around Taipei?

Species identification; clusters of big plump red bugs in Taipei

What causes “ear rumbling”?

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

Is this a hawk, or an eagle?

Why do soil bacteria produce nitrous oxide as a result of anhydrous ammonia fertilizer application?

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

Don't understand figures in this citizen-science mosquito ID project

Are four-leaf clovers mutations, developmental errors, or something more complicated?

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

How much energy does a spider expend per day just waiting for its web to vibrate?

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

Melatonin production, sleep, and “cyan light”; how might this finding be possible?

What are these little leaves growing on these other leaves? (plant growing near the ocean)

Is it unusual for populations of archaea to be found living inside trees?

Do these large spiders in Taiwan belong to different species?

How exactly do birds get drunk eating fruit? Fermentation should be anaerobic

Is this tall, white tree in central Australia a kind of Eucalyptus?

Why are “itch signals” transmitted so slowly from the skin to the human brain?

What does “dissection-based microscopy” mean as described here, and how can it give genetic information?