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Topics	Replies	Views	Last post
Technology \ How did they make the first screw? Started by alancalverd	16	639	Last post by Zer0 22/03/2023 19:22:19
Geology, Palaeontology & Archaeology \ Why do insects fly? Started by alancalverd	56	2249	Last post by Zer0 13/03/2023 23:26:04
Just Chat! \ Empty words? Started by alancalverd	5	388	Last post by Zer0 04/03/2023 21:10:57
That CAN'T be true! \ Can I get infinite "green" heat from my barn? Started by alancalverd	32	1304	Last post by Bored chemist 22/02/2023 16:48:51
The Environment \ Can anyone please enlighten me on pressure broadening? Started by alancalverd	2	445	Last post by Bored chemist 03/02/2023 17:56:55
Just Chat! \ Another yuletide maths puzzle Started by alancalverd	7	499	Last post by alancalverd 29/12/2022 11:07:57
General Science \ Advent calendar maths question! Started by alancalverd	22	1461	Last post by alancalverd 20/12/2022 11:21:42
General Science \ Why is gold gold? Started by alancalverd	14	1259	Last post by Bored chemist 04/12/2022 14:13:01
General Science \ How does shoe polish work? Started by alancalverd	4	830	Last post by alancalverd 19/11/2022 23:15:20
Just Chat! \ Unanswered questions in classical physics! Started by alancalverd	11	648	Last post by Bored chemist 03/11/2022 19:17:04
Technology \ Is sustainable energy really possible? Started by alancalverd	65	4587	Last post by Peter11 17/10/2022 15:05:32
Technology \ Are trains greener than green? Started by alancalverd	3	939	Last post by Deecart 03/10/2022 20:12:15
The Environment \ How come the ice core temperature curve always leads the CO2 curve? Started by alancalverd	92	15916	Last post by Petrochemicals 26/07/2022 09:18:12
Physics, Astronomy & Cosmology \ shape change with no energy transfer? Started by alancalverd	9	1331	Last post by chiralSPO 16/05/2022 13:53:35
General Science \ Why do waves move towards the beach? Started by alancalverd	4	1534	Last post by Colin2B 11/05/2022 08:55:45
New Theories \ Does this answer evolution-deniers? Started by alancalverd	51	4424	Last post by alancalverd 08/04/2022 10:37:02
Technology \ Would minirockets have any military value? Started by alancalverd	21	3965	Last post by Iannguyen 14/02/2022 08:31:07
Technology \ EoN a con? Started by alancalverd	125	17134	Last post by Iannguyen 20/01/2022 14:14:40
That CAN'T be true! \ Why can't water vapour be the driver of today's climate change? Started by alancalverd	269	21511	Last post by mikewonders 05/01/2022 15:37:11
New Theories \ Do rocket engines violate the equivalence principle? Started by alancalverd	23	2174	Last post by Origin 29/11/2021 14:45:39